Dockerfile vs docker image

Dockerfile vs docker image. yaml and placing a custom Dockerfile alongside your docker-compose. Docker image and Container are closely related to each other the major difference between them is these images are a collection of File plus metadata which is required to run an application, and a container is a running instance of the image or container is a copy of the image. Docker Hub is the default global marketplace for storing and distributing images. Build and test your images in CI. jar ENTRYPOINT ["java","-jar","/app. On the other hand, I expect that advanced configuration (customizing application property files) will be much easier to do in vim before simply committing an new image. In some cases you don't want images to be updated to newer versions, but Apr 5, 2024 · Step 3: Build Docker Image. In other cases, you have to specify the full name as. If you add a custom CMD in the Dockerfile, be sure to include -g daemon off; in the CMD in order for nginx to stay in the foreground, so that Docker can track the process properly (otherwise your container will stop immediately after starting)! Then build the image with docker build -t custom-nginx . Docker uses a Dockerfile to manage builds which has a specific set of instructions and rules about how you build a container. For example, information like what command to run when starting the container (as probably represented in the Dockerfile that was used to build the image). Jan 8, 2024 · Spring Boot version 2. You will see the “OFFICIAL IMAGE” label in the top right corner of the search entry. Nov 25, 2016 · Ports mentioned in docker-compose. The following example uses the current directory (. With all of your images and containers deleted, you can now pull the application image from Docker Hub: $ docker load --input fedora. FROM eclipse-temurin:17-jdk-alpine VOLUME /tmp ARG JAR_FILE COPY ${JAR_FILE} app. A Dockerfile is a text file containing instructions for building your source code. Here is the difference between image and container: Image An image is a specified snapshot of your filesystem and includes the starting command of your container. Feb 18, 2020 · Docker Entrypoint vs CMD: Solving the Dilemma ; Shell and Exec Form; Docker CMD. When to Use and How to Run a Dockerfile: Example A Dockerfile can be used by anyone wanting to build a Docker image. ai A Docker image packs up the application and environment required by the application to run, and a container is a running instance of the image. Step over this line once. An image is simply a template for the running containers, consisting of multiple read-only layers. Image built in a stage of the dockerfile will be later accessible using that stage's name. Though less common than other workflows, using a Dockerfile with the httpd Docker Official Image is helpful for defining custom configurations. And mysql needs to be waked up before you run apache May 29, 2016 · docker run image is a shortcut for 2. We can write a Dockerfile. Docker containers are runtime instances of Docker images, whether running or stopped. " (the project folder), and in . License Starting on March 20th, 2024, Redis follows a dual-licensing model with the choice of the Redis Source Available License v2 - RSALv2 ⁠ or the Server Side Public Jan 29, 2017 · Let's say we have a jar file and we want to make a docker image of it. Open Command Palette (⇧⌘P (Windows, Linux Ctrl+Shift+P)) and issue Docker Images: Build Image command. Images are built in layers. Whether you're building a customized container from the Visual Studio IDE, or setting up a command-line build, you need to know how Visual Studio uses the Dockerfile to build your projects. Start debugging using the F5 key. May 18, 2022 · Unlike the Dockerfile, the docker-compose command and the docker-compose. There’s a Dockerfile standard they follow, and the Docker daemon is ultimately responsible for executing the Dockerfile and generating the image. The Docker container runs. in your docker-compose. Jul 4, 2019 · Image: An image is an immutable, shareable file that is stored in a Docker-trusted registry. You can put the Dockerfile wherever you'd like in your project. See full list on cto. Docker Compose: Key Differences Dockerfile vs. Use the command: $ docker build -t Darwin . Breaking this down: build – Build an image from a Dockerfile-t – Name and optionally tag the image . Docker Official Images are specifically designed as a set of hardened, battle-tested images that support a wide variety of platforms, languages, and frameworks. Open the Docker Dashboard. Aug 28, 2019 · A Docker image is the blueprint of Docker containers that contains the application and everything you need to run the application. That Dockerfile defines some ENV values. Here's the Dockerfile used by the docker build command you ran earlier. Jan 30, 2024 · You can customize your container images by editing the Dockerfile that Visual Studio generates when you add Docker support to your project. As with all Docker images, these likely also contain other software which may be under other licenses (such as Bash, etc from the base distribution, along with any direct or indirect dependencies of the primary software being contained). But if you run the Docker container and provide a command like sudo docker run <image-id> hostname , it will override the default command and execute hostname instead. Although there are differences in the scope of their function, the commands perform the same task. Each container contains only one process (Apache or Mysql or another); And Dockerfile defines how to build a image. A typical Dockerfile usually starts by including another image. tar. Jun 27, 2018 · I don't see how this would be related to where you put your Dockerfile (since your Dockerfile location on the host machine has nothing to do with the pwd inside the container). May 30, 2024 · In the file explorer, on the left in VS Code, right-click the Dockerfile and then select Build Image. To get started quickly, open the folder you want to work with in VS Code and run the Dev Containers: Add Dev Container Configuration Files The Docker extension contributes a Docker Explorer view to VS Code. and. Jul 11, 2019 · The image: tag in the YML file is misleading in that it's actually the Dockerfile that builds the image (it is docker-compose which executes the container which runs on that image). Right-click on the image built in previous step and choose Run or Run Interactive In this hands-on guide, you'll learn how to sign in to Docker Hub and push images to Docker Hub repository. txt for Python or package. python:<version>-windowsservercore Docker images are created through Dockerfile, but Docker containers are created through images. You can also combine these scenarios and use Dockerfile with Docker Compose. If needed, create an account and then complete the sign-in A stage is a part of the dockerfile that starts at the FROM keyword and ends before the next FROM keyword. Building an Image. This optional variable can be used to define another location - like a subdirectory - for the database files. For instance, the debian image is built from scratch as such: FROM scratch ADD rootfs. io is the canonical reference for Docker's public registry. Container: An instance of an image is called a container Apr 24, 2023 · The Docker image, Docker container, and Dockerfile give Docker its widespread use. Although both were invented by Docker and are part of the Docker universe, Dockerfile and Docker Compose are two different things with different functions. Feb 3, 2020 · If you create an image using a Dockerfile, it's all but trivial to update the image by checking it out from source control, updating the tag on a base image or docker pulling a newer version of it, and re-running docker build. dockerignore file; a NuGet package reference to the Microsoft. Stable releases are also tagged with their version (ie, debian:11 is an alias for debian:bullseye, debian:10 is an alias for debian:buster, etc). Sign in with your Docker account. yml to reference the Dockerfile by replacing image with a similar build section: Dec 27, 2023 · Step 2 – Building Docker Images. Jul 3, 2024 · Docker is an open-source platform that enables developers to build, distribute, operate, update, and manage containers. We start with a basic Dockerfile and make a few tweaks. What Are Dockerfiles Dockerfiles, simply put, are a way to build a container image. Run the following command to build a docker image, replacing <image> with an image name and <path> with the path to Dockerfile: docker build -t <image> <path> For most cases, you don't need to create your own base image. Attribute keys: name - name (references) for the new image. Containers are the execution part of Docker, analogous to a "process". An image holds all the required binaries to run. At this location, the builder will find the Dockerfile and other referenced files. To add cross-compilation support, update the Dockerfile to use the pre-defined BUILDPLATFORM and TARGETPLATFORM build arguments. dockerfile: If given, it sets an alternate name for a Dockerfile. m2. The next step is to build a Docker image. This can be done very easily by specifying build:. 3. These layers can be cached which helps speed up builds. There are also About this image. jar"] Now, if we want to build the docker image using Maven, we can pass the Feb 28, 2020 · In a Dockerfile, each FROM line starts a new image, and generally resets the build environment. The tag is a friendly name for the image. Build the image. The following are the major comparisons between with Dockerfile, Docker Image and Docker Containers: Aug 18, 2017 · This is the docker build command, see the official docs for details. Creating a Dockerfile with CMD and Building an Image; Running a Docker Container with CMD; Docker Entrypoint. The CMD directive specifies the default command to run when starting a container from this image. You can search for Docker Hub images and run them directly from Docker Desktop. The Dockerfile instruction syntax is defined by the specification reference in the Dockerfile reference . In Docker, you build images while you run containers. xz / CMD ["bash"] The rootfs. Docker compose allows run, links and configure the bunch of containers together. Reusing the Maven local repository. COPY and advises when to use each command. yml will be shared among different services started by the docker-compose. The syntax uses the -f (or --file) option to specify the Dockerfile to use, and it uses a hyphen (-) as filename to instruct Docker to read the Dockerfile from stdin. Dockerfile Example: Creating an Image to Install MongoDB Feb 6, 2024 · You have now removed both the container running your application image and the image itself. You can run docker to create the Container Image using the Dockerfile instructions: docker build -t comparing-docker-methods:dockerfile Using dive we can see a pretty slim Container Image at 209MB: This guide walks you through the process of building a Docker image for running a Spring Boot application. Aug 11, 2022 · Dockerfile vs. Set by Visual Studio when Docker support is added to a project. Oct 30, 2017 · any specific image configuration that is necessary to know how to run a container using this image. A Dockerfile is a text document that contains all the commands a user could call on the command line to assemble an image. Optionally, image can be automatically pushed to a registry by specifying attributes. The command lets you pick a pre-defined container configuration from a list based on your folder's contents, reuse an existing Dockerfile, or reuse an existing Docker Compose file. Instead, docker-compose is used to describe how to run Docker images as containers. For example, docker pull ubuntu:24. Key differences: Docker images vs. In . With our Dockerfile ready, it‘s time to build the actual image using the docker build command: $ docker build -t my-python-app . This is all you really need to get started with using Make in Docker, but read on to see a more advanced use case. 1. Nov 24, 2021 · I need to learn a CI pipeline in which there is a step for building and pushing an image using a Dockerfile and another step for creating a helm chart image in which there is a definition of the image created by the docker file. What is Dockerfile?A Dockerfile is just a text file that contains all the commands that must be executed to create a Docker image. Run a Container with May 23, 2024 · After reading this article, you should have a basic understanding of Docker images and containers. A Dockerfile is a manifest that describes the base image to use for your Docker image and what you want installed and running on it. When you add or enable Docker support, Visual Studio adds the following to the project: a Dockerfile file; a . Docker Hub provides a variety of Docker-supported and endorsed images known as Docker Trusted pull requires the image builder to pull referenced images (FROM Dockerfile directive), even if those are already available in the local image store. tar Loaded image: fedora:rawhide Loaded image: fedora:20 $ docker images REPOSITORY TAG IMAGE ID CREATED SIZE busybox latest 769b9341d937 7 weeks ago 2. To minimize image size, it's uncommon for additional related tools (such as git or bash) to be included in Alpine-based images. Then you can use docker compose build command to build your image (you need to do it only once). Now that you have created a Dockerfile and learned the basics, it's time to learn about building, tagging, and pushing the images. 489 MB fedora rawhide 0d20aec6529d 7 weeks ago 387 MB fedora 20 58394af37342 7 weeks ago 385. Docker can build images automatically by reading the instructions from a Dockerfile. Dec 12, 2023 · Docker uses the docker build command to build container images from a Dockerfile and a build context. While some of that standard is hard to define (due to subjectivity May 19, 2019 · Docker gives no semantic meaning at all to tag values. Jan 25, 2024 · ADD and COPY are Docker commands for copying files and directories to a Docker image using a Dockerfile. Docker Compose: Overview. Dockerfile instructions Mar 17, 2021 · Docker Hub: Docker’s own, official image resource where you can access more than 100,000 container images shared by software vendors, open-source projects, and Docker’s community of users. Jul 2, 2019 · The last Dockerfile is thus the recommended Dockerfile, while all intermediate ones are there only to illustrate specific best practices. As I understand it is essentially May 26, 2016 · RUN is an image build step, the state of the container after a RUN command will be committed to the container image. Jul 23, 2024 · Add Docker support. Contrary When using multi-stage builds, you aren't limited to copying from stages you created earlier in your Dockerfile. in this command implies that docker can use a file called dockerfile in the current directory. Usage: # Build an image using the Dockerfile at current location # Example: docker build -t [name] . The Docker image builds. NET Framework projects, set to ". Then we show a couple of options that use build plugins (for Maven and Gradle) instead of docker. Create a file called Dockerfile. Ports will be exposed to the host machine to a random port or a given port. 4 . You have to build an image by Dockerfile then run it by Compose; After you run docker-compose up --build the image is built and cached in your system, then Compose would start the containers defined by docker-compose. A Dockerfile is a text document with a series of commands used to build a Docker image. It consists of: A base image that you’re building your container image from (think underlying OS) Using this image as a base, add the things you need in your own Dockerfile (see the alpine image description for examples of how to install packages if you are unfamiliar). lost+found), Postgres initdb Navigate to Run and Debug and select Docker: Python - General, Docker: Python - Django, or Docker: Python - Flask, as appropriate. 5 days ago · Docker will use your Dockerfile to construct the image. Apr 13, 2022 · 1. My docker-compose. Enter getting-started as the tag for the image in the text entry box. NET Core and . The output after executing the script will be the ID of the new docker image. _ For more information, see OCI and Docker exporters. m2 maven mvn archetype:generate # will download artifacts $ docker run -it -v maven-repo:/root/. Option Default Description-c, --change: Apply Dockerfile instruction to the created image-m, --message: Set commit message for imported image--platform Dec 13, 2013 · Using Dockerfiles is as simple as having the Docker daemon run one. To push images to Docker Hub, you will need to sign in with a Docker account. The debian:latest tag will always point the latest stable release. When pushing or pulling to a 2. However, only Dockerfiles can be used to create Docker images. and 3. To learn more about writing a Dockerfile, visit the following resources: Dockerfile reference; Dockerfile best practices; Base images; Getting started with Docker Init; Next steps. You can also reference by digest in create, run, and rmi commands, as well as the FROM image reference in a Dockerfile. creating and sharing a Docker image via a registry (e. For example Aug 13, 2020 · If you do not have a Docker account yet, you can create one for free. To create an image # first, get the images on your system $ docker images # select an image id you are curious about and $ docker inspect image-id # look out for an "Env" array in the output Overriding ENV Values. For more information about Docker images, read How to Create Docker Image from Dockerfile. yaml file the command depends upon are not used to actually build Docker images. m2 maven mvn archetype:generate # will reuse downloaded artifacts May 21, 2024 · The default context used when building the Docker image, as a path relative to the Dockerfile. secrets Two different syntax variants are supported: the short syntax and the long syntax. g. docker build -t my_mongodb . Most container images are built with a Dockerfile. Mar 19, 2024 · A Dockerfile is a plain text file that contains instructions for building Docker images. For more information about automatically updating your base images with Docker Scout, see Remediation. Creating a Dockerfile with ENTRYPOINT and Building an Image; Running a Docker Container with ENTRYPOINT; Docker Entrypoint with CMD. You’ll be able to write a Dockerfile and publish Docker images like a pro. PORT_NUMBER : If a hostname is present, it may optionally be followed by a registry port number in the format :8080 . If you are signed in to your Microsoft account and it has access to Azure subscriptions, you can browse your Azure Container Registries as well. This video is a docker tutorial which explains the two main components of Docker - Docker Compose & Dockerfile (docker compose vs dockerfile). Containers. Docker containers. 5 MB fedora heisenbug 58394af37342 7 weeks ago 385. CMD is the command the container executes by default when you launch the built image. Using this image as a base, add the things you need in your own Dockerfile (see the alpine image description for examples of how to install packages if you are unfamiliar). After that, there's a CD pipeline in which there's an installation of what was created by the helm chart only. The final . ) as the build context, and builds an image using a Dockerfile passed through stdin using a here-document. Once you have logged into Docker, enter “NGINX” into the top search bar and press enter. This time we’ll update docker-compose. Oct 28, 2020 · The final Container Image is created from the AdoptOpenJDK 8 JRE Container Image and includes the created Jar file. context: If given, it specifies the build-directory, where the Dockerfile is looked-up. If the data volume you're using is a filesystem mountpoint (like with GCE persistent disks), or remote folder that cannot be chowned to the postgres user (like some NFS mounts), or contains folders/files (e. It uses dotnet publish the same way you did in this section to build and deploy. You can use the COPY --from instruction to copy from a separate image, either using the local image name, a tag available locally or on a Docker registry, or a tag ID. So, in that case, you can simply do. 0 introduces two new features to improve the Docker image generation: Buildpack support provides the Java runtime for the application, so it’s now possible to skip the Dockerfile and build the Docker image automatically; Layered jars help us to get the most out of the Docker layer generation Mar 16, 2021 · The main difference is Dockerfile is used to build an image while Compose is to build and run an application. When using tags, you can docker pull an image again to make sure you have the most up-to-date version of that image. Open Docker Explorer and verify that the new image is visible in the Images tree: Test the service container. You can pull using a digest value. Your Dockerfile is a plain text file that instructs Docker on how to build your image. To use a Dockerfile . You'll see output in your terminal as Docker runs each of your instructions. Now we can actually build the image with docker build . image: Tells Docker which name it should give to the image May 25, 2024 · Dockerfile vs. Docker builds images by reading the instructions from a Dockerfile. So, we can ship it to any docker engine. Let’s learn more about Docker and Dockerfile as we move forward. May 15, 2024 · To see the new image use the docker images command. May 27, 2024 · Mastering Dockerfile and Docker Compose is essential for developers and DevOps experts expecting to advance application development and deployment, dockerfile gives a strong method for prearranging the making of Docker images, ensuring that applications run reliably across various conditions by determining every single important reliance and View license information ⁠ for the software contained in this image. The article explained their roles in a Docker deployment and provided an overview of their differences. VisualStudio. This is a “getting started” guide, so the scope is limited to a few basic needs. Imagine, you have an image built from a Dockerfile. The Debian image adds the filesystem folders to the scratch image, which is empty. json for Node ). Since this isn't an article on container images, I'm going to refrain from over explaining that topic. You’ve now fully integrated Make into your Docker repository, and hopefully you can see the advantages that it’ll bring to your workflow. Use the following procedure to create a Docker image using the Dockerfile created in the previous step. features Jun 22, 2022 · Docker abstracted away all of the nuances with an easy-to-use CLI and fewer scalability headaches. g Docker Hub) ? In the first case the user needs to clone the repo to get the specs and run the docker build to create an image. Docker Hub contains a vast library of Docker images that are suitable for use as a base image in your build. Each FROM RUN ADD COPY commands modify the layers included in an OCI image. docker build -f Dockerfile. How can you change those values when running a container? Mar 8, 2024 · The above Dockerfile uses an ENTRYPOINT instruction that echoes Hello, Darwin when the container is running. When using docker driver the image will appear in docker images. 04 image. The local Maven repository can be reused across containers by creating a volume and mounting it in /root/. 2 Building the image. build . A Docker container is a self-contained, runnable software application or service. If your image needs to specify ARG s, they need to come after the FROM line; if it's a multi-stage build, they need to be repeated in each image as required. This article compares Docker ADD vs. Select Sign in at the top-right corner. – Location of the Dockerfile (the build context) If you were to try to build this Dockerfile with docker build, the builder would attempt to use emulation to build the image for the specified platforms. The default is /var/lib/postgresql/data. Jan 8, 2024 · build: If given, docker-compose is able to build an image from a Dockerfile. The . The Docker Explorer lets you examine and manage Docker assets: containers, images, volumes, networks, and container registries. When ready, press continue. This page describes the commands you can use in a Dockerfile. Nov 11, 2023 · An alternative is to specify the image name when building with docker rather than the Dockerfile: # Build and tag image docker build -t myapp:1. After Docker downloaded the image, the instructions from the Dockerfile copied in your application and used yarn to install your application's dependencies. PATH : The path consists of slash-separated components. Stage 2. This video is p To create a Docker image of a simple web application. 2. May 6, 2024 · The following command can be used for building Image from a Dockerfile: docker build -t myapp . -t my_image:v1. A Dockerfile can have many RUN steps that layer on top of one another to build the image. Docker Compose Feb 4, 2014 · For example, if you have a Dockerfile with CMD ["echo", "Hello Docker"], when you run the Docker container without specifying a command, it will execute echo "Hello Docker". For the main app, I'm struggling with the decision of writing a Dockerfile or compiling an image to be hosted. The build context is a set of files specified in the Dockerfile used in container creation. Oct 30, 2016 · Docker creates isolated machine (container). dockerfile: Rather than referencing an image, you may instead use the dockerfile property, which is the relative path to a Dockerfile that you want to use as your image. On the other hand, a Docker image is the template loaded onto the container to run it, like a set of instructions. Remember that so far we’ve only specified some instructions. Docker Compose: Overview A Dockerfile is a text document with a series of commands used to build a Docker image. Overview of Docker Using containers, the Docker containerization platform makes it simple to design, deploy, and operate programs. yml looks like: mysql: image: mysql:5. This isn‘t necessarily wrong, but the name isn‘t visible in the Dockerfile itself. . $ docker volume create --name maven-repo $ docker run -it -v maven-repo:/root/. A Dockerfile will only use the final CMD defined. A Dockerfile is a recipe (or blueprint if that helps) for building Docker images, and the act of running a separate build command produces the Docker image from that recipe. Docker images and containers. In a development cycle, when building a Docker image, making code changes, then rebuilding, it is important to leverage caching. Images are the packing part of Docker, analogous to "source code" or a "program". You can also use the service to host and manage your own private images. This gives your multi-container workflow the same quick setup advantages described for the Docker image and Dockerfile workflows above, while still allowing you to use the command line if you prefer. For more information on removing Docker containers, images, and volumes, please review How To Remove Docker Images, Containers, and Volumes. May 9, 2022 · The existing image is tagged with latest, and then it’s pushed to the Docker repository. 0 registry, the push or pull command output includes the image digest. Another major difference between these two is that the Docker image file consists of image layers to keep the image size smaller, and these layers are only readable layers. The Dockerfile. In your case apache needs to know "where" a mysql. Nov 19, 2017 · The scratch image is mostly used for building other base images. The image exporter writes the build result as an image or a manifest list. From one Docker image, many instances of containers Oct 22, 2023 · From this Dockerfile, you can now build a container image (or a docker image). In this tutorial, we will explain what Dockerfile is, how to create one and how to build a Docker image with Dockerfile. When you check in a change to source control or create a pull request, use GitHub Actions or another CI/CD pipeline to automatically build and tag a Docker image and test it. Nov 7, 2017 · Docker's Dockerfile. Azure. in the command provides the path or URL to the build context. The official NGINX image should be the first image in the search results. docker build [OPTIONS] PATH | URL | - The docker build command expects the file name to exactly be Dockerfile. In my test, Dockerfile builds FROM nginx:alpine, but docker ps -a displays an image-name of Apache because that's what the image: tag in the YML file says. Docker Compose is a tool for defining and running multi-container applications. json by hand and use any image, Dockerfile, or set of Docker Compose files as a starting point. "). Finding images. NET 5 and later projects, it's set to the relative path to the solution folder (usually ". Aug 10, 2022 · How to use a Dockerfile with your image. On one hand, a Dockerfile is easy to share and modify over time. image. docker build . Tools. 04 pulls the latest version of the Ubuntu 24. (docker create image and docker start container_id). and run it as follows: Using names and tags is a convenient way to work with images. Dockerfile vs Docker Image Vs Container. Aug 8, 2017 · The act of cooking is building the recipe. The only special tag value is that if you just say imagename in a docker pull or docker run command, it is automatically interpreted as imagename:latest. Dockerfile. The Docker images can then be uploaded to places like DockerHub for either public usage or private Sep 29, 2020 · sharing the Dockerfile (specs/build configuration) including language specific config file (such as requirements. 4 days ago · Here, you’ll learn how to build—and how not to build—Docker images. yml Save the Dockerfile file. yaml. The -t in the command tags your image with a given name ( my-website:v1 ). Most Docker users use images created by other organizations, and the following guidelines help to prevent inadvertent duplication of labels across objects, especially if you plan to use labels as a mechanism for automation. xz contains all the files system files. The python debugger stops at the breakpoint. A tag can be any string value at all, and tags can be reused. The Docker client pulls the image if necessary and copies the Dec 16, 2022 · Using a Dockerfile with Docker Compose . 5 MB fedora latest Because these container images can be massive - larger than probably anyone needs - and the permutations of different Windows, Visual Studio, and . An image occupies just disk-space, it does not occupy memory/cpu. You can also create a devcontainer. Incremental build time. NET Framework versions would complicate which version you might need, you are encouraged to use these samples or build on them and publish, if desired, images to your own Docker registry on your LAN Because the official images are intended to be learning tools for those new to Docker as well as the base images for advanced users to build their production releases, we review each proposed Dockerfile to ensure that it meets a minimum standard for quality and maintainability. A Docker image is built up from a series of read-only layers. When you run a build, the builder pulls the base image, if needed, and then runs the instructions specified in the Dockerfile. It has over 100,000 images created by developers that you can run locally. 7 ports: - "3306" If I do docker-compose ps, it will look like: Jun 18, 2024 · Docker Image vs Container. image: The name of an image in a container registry (Docker Hub, GitHub Container Registry, Azure Container Registry) VS Code should use to create the dev container. Targets Note that docker. Each layer represents an instruction that is being given in the image’s Dockerfile. jwock duy fvuluy yxl jqoapro evhnw ytsx zagwgrg phnj qptdz