build-devcontainer-image.yml

name: Build Dev Container Image
on:
  push:
    branches:
      - 'main'
    paths:
      - '.github/workflows/build-devcontainer-image.yml'
      - 'tools/devcontainers/sage/**/devcontainer.json'
      - 'tools/devcontainers/sage/**/Dockerfile'
  pull_request:
    paths:
      - '.github/workflows/build-devcontainer-image.yml'
      - 'tools/devcontainers/sage/**/devcontainer.json'
      - 'tools/devcontainers/sage/**/Dockerfile'

env:
  IMAGE_REPOSITORY: ghcr.io/sage-bionetworks/sage-devcontainer
  DEFAULT_BRANCH: main

jobs:
  devcontainer:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3

      - name: Lint Dockerfile
        uses: docker://hadolint/hadolint:latest
        with:
          entrypoint: hadolint
          args: tools/devcontainers/sage/.devcontainer/Dockerfile

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v2

      - name: Cache Docker layers
        uses: actions/cache@v3
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-single-buildx-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-single-buildx

      - name: Set buildx as the default builder
        run: docker buildx install

      - name: Prepare the image build
        id: prep
        run: |
          DEVCONTAINER_VERSION="${GITHUB_SHA::7}"
          IMAGE_NAME="${{ env.IMAGE_REPOSITORY }}"
          echo "image_name=${IMAGE_NAME}" >> $GITHUB_OUTPUT
          echo "devcontainer_version=${DEVCONTAINER_VERSION}" >> $GITHUB_OUTPUT

      - name: Build the image
        run: |
          WORKSPACE_FOLDER="tools/devcontainers/sage"
          IMAGE_NAME=${{ steps.prep.outputs.image_name }}
          IMAGE_TAG=${{ steps.prep.outputs.devcontainer_version }}

          # [Optional] Enable buildkit, set output to plain text for logging
          export DOCKER_BUILDKIT=1
          export BUILDKIT_PROGRESS=plain

          # Export the devcontainer version, which will be set inside the image. See
          # devcontainer.json used to build the image.
          export DEVCONTAINER_VERSION=${{ steps.prep.outputs.devcontainer_version }}

          # Build the image
          npm install -g @devcontainers/cli
          devcontainer build \
            --image-name "${IMAGE_NAME}:${IMAGE_TAG}" \
            --workspace-folder "${WORKSPACE_FOLDER}"

      - name: Login to GitHub Container Registry
        if: ${{ github.event_name != 'pull_request' }}
        uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Push the image to GitHub Container Registry
        if: ${{ github.event_name != 'pull_request' }}
        run: |
          IMAGE_NAME=${{ steps.prep.outputs.image_name }}
          IMAGE_TAG=${{ steps.prep.outputs.devcontainer_version }}
          docker push "${IMAGE_NAME}:${IMAGE_TAG}"