#What are containers used for in neobook code
Overrides the user that VS Code runs as in the container (along with sub-processes). Make a list of ports inside the container available locally.Ī command string or list of command arguments to run after the container is created. Relative path to a Dockerfile that you want to use as your image.Īdds default settings.json values into a container/machine specific settings file.Īn array of extension IDs that specify the extensions that should be installed inside the container when it is created. The above example is taken from the vscode-remote-try-node repo we used in the tutorial. The devcontainer.json is basically a config file that determines how your dev container gets built and started. Once all of this is done, your local copy of Visual Studio Code connects to the Visual Studio Code Server running inside of your new dev container. Finally your Visual Studio Code environment is installed and configured again according to settings in the devcontainer.json. Then a container is created and started using some of the settings in the devcontainer.json. devcontainer folder, namely devcontainer.json, and an optional Dockerfile or docker-compose.yml, to create your dev containers.įirst your image is built from the supplied Docker file or image name. The remote container extension uses the files in the. This next section describes in more detail how the Remote - Containers extension sets up and configures your containers. You can end your session in the container and go back to running VS Code locally with File > Close Remote Connection. Once the process starts, navigate to and you should see the simple Node.js server running! We can now hit F5, which will run the application inside the container. The specific container for this tutorial has Node.js v12 installed, which you can check by opening a new terminal Terminal > New Terminal ( ⌃⇧` (Windows, Linux Ctrl+Shift+`)) and entering: node -version npm -version One of the useful things about developing in a container is that you can use specific versions of dependencies that your application needs without impacting your local development environment. Once the container is running and you're connected, you should see your remote context change in the bottom left of the Status bar: Fortunately, this step isn't necessary the next time you open the folder since the container will already exist.Īfter the container is built, VS Code automatically connects to it and maps the project folder from your local file system into the container. This may take some time, and a progress notification will provide status updates.
The window will then reload, but since the container does not exist yet, VS Code will create one and clone the sample repository into an isolated container volume. Note: There are other remote container samples such as vscode-remote-try-python or vscode-remote-try-java, but this tutorial will use vscode-remote-try-node.
from the command list that appears and select the Node sample from the list. Select Remote-Containers: Try a Development Container Sample. To create a Docker container, we are going to open a GitHub repository with a Node.js project. The Remote Status bar item can quickly show you in which context VS Code is running (local or remote) and clicking on the item will bring up the Remote - Containers commands. With the Remote - Containers extension installed, you will see a new Status bar item at the far left.
#What are containers used for in neobook install
Install the Remote - Containers extension The Remote - Containers extension lets you run Visual Studio Code inside a Docker container. Once Docker is running, you can confirm that everything is working by opening a new terminal window and typing the command: docker -version # Docker version 18.09.2, build 6247962 Install the extension
You can click on the icon to see the status. If the whale icon is animated, it is probably still in the process of starting. You will know it's running if you look in the activity tray and see the Docker whale icon.ĭocker might take a few minutes to start. Run the Docker Desktop application to start Docker. Docker Desktopĭownload and install Docker Desktop. Install Dockerĭocker is needed to create and manage your containers. Running VS Code inside a Docker container can be useful for many reasons, but in this walkthrough we'll focus on using a Docker container to set up a development environment that is isolated from your local environment.
You need no prior knowledge of Docker to complete this tutorial. This tutorial walks you through running Visual Studio Code in a Docker container using the Remote - Containers extension.
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