Skip to main content

2. Setting Up Codespaces

info

GitHub Codespaces provides an isolated cloud environment where you can build and test your Docker images without cluttering your local machine.

Launching a Codespace​

  1. Navigate to your GitHub repository.
  2. Click on the Code button, select the Codespaces tab, and click the + to create a new Codespace.

Codespaces Creation

Once it launches, it will open a fully functional VS Code environment in your browser!

Codespaces UI

Configuring the Environment​

To ensure your Java environment is set up correctly in the Codespace, create a .devcontainer folder in your project root.

devcontainer.json​

Create a file at .devcontainer/devcontainer.json and paste the following configuration:

{
  "name": "Java & MySQL Dev Environment",
  "image": "mcr.microsoft.com/devcontainers/java:1-17-bullseye",
  "features": {
    "ghcr.io/devcontainers/features/docker-in-docker:2": {}
  },
  "forwardPorts": [8080, 3306],
  "customizations": {
    "vscode": {
      "extensions": [
        "vscjava.vscode-java-pack",
        "vscjava.vscode-spring-initializr",
        "vscjava.vscode-spring-boot-dashboard"
      ]
    }
  }
}
warning

After saving this file, VS Code will prompt you to Rebuild the Container. You must click Rebuild to apply these configurations.

Rebuild Prompt

Wait for the container to rebuild completely.

Rebuild Progress

Now proceed to Converting To Jar File.