.devcontainer/devcontainer.json

{
    "build": {
      // instructs devcontainers to use a Dockerfile
      // rather than a pre-defined image
      "dockerfile": "Dockerfile"
    },
    "customizations": {
      "vscode": {
        "extensions": [
          "ms-azuretools.vscode-docker", // docker support
          "BazelBuild.vscode-bazel" // bazel support
        ]
      }
    },
    // sets up pre-commit hooks
    "postStartCommand": "pre-commit install"
  }