docker-release.yml

name: Docker Release

# only run this on merge to main
# clone the repo
# set the VERSION environment variable ie `cat packages/runtime/package.json | jq -r '.version'`
# use `docker manifest inspect ohmjs/ohm:$VERION` to verify that the release doesn't already exist before running the rest of the workflow
# create a multi platfrom builder
# build and push the image

on:
  push:
    branches: [main, docker-release-gha]

jobs:
  docker:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - name: Get version
        id: version
        run: |
          echo "VERSION=$(cat packages/runtime/package.json | jq -r '.version')" >> "$GITHUB_OUTPUT"

      - name: Check if image already exists
        id: check
        run: |
          if docker manifest inspect ohmjs/ohm:${{ steps.version.outputs.VERSION }} > /dev/null 2>&1; then
            echo "exists=true" >> "$GITHUB_OUTPUT"
          else
            echo "exists=false" >> "$GITHUB_OUTPUT"
          fi

      - name: Set up QEMU
        if: steps.check.outputs.exists == 'false'
        uses: docker/setup-qemu-action@v4

      - name: Set up Docker Buildx
        if: steps.check.outputs.exists == 'false'
        uses: docker/setup-buildx-action@v4

      - name: Log in to Docker Hub
        if: steps.check.outputs.exists == 'false'
        uses: docker/login-action@v4
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Build and push
        if: steps.check.outputs.exists == 'false'
        uses: docker/bake-action@v7
        with:
          files: docker/docker-compose.yml
          push: true
        env:
          VERSION: ${{ steps.version.outputs.VERSION }}