buildwithdocker.yaml

name: buildwithdocker-on-push
# !!!! IMPORTANT
# for this to function properly there should be NO latest tag on any commit
# delete latest on remote: git push origin :latest
# delete locally: git tag --delete latest

on:
  push:

jobs:
  build-and-release:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0 # Number of commits to fetch. 0 indicates all history for all branches and tags. Default: 1
      # - run: git version
      - run: git show-ref --tags -d --abbrev=7
      # the release action ("marvinpinto/action-automatic-releases@latest") uses the 'latest' lightweight tag releases work in github
      # 'latest' is actually set by using automatic_release_tag:
      # by using something fixed like 'latest' there is only one release that has this tag
      # keep in mind that the tag 'latest' is only on github, since nobody fetches it back...
      # since we have the hash, we can try to guess the version used
      # looks like released versions are correct
      # 'git describe --abbrev=0 --dirty' doesn't work BUT git describe does ????
      # therefore we use 'export GIT_TAG=${GIT_TAG_LONG::-9}' instead of the above correct one ...
      - run: git describe
      - name: Set version string if prerelease
        if: ${{startsWith(github.ref, 'refs/heads/master')}} # branch master and ignore any tag see https://docs.github.com/en/actions/learn-github-actions/contexts#github-context
        run: |
          export GIT_COMMIT=`git rev-parse --short HEAD`
          export GIT_TAG_LONG=`git describe`
          export GIT_TAG=${GIT_TAG_LONG::-9}
          export VERSION_STRING="$GIT_TAG ($GIT_COMMIT)"
          echo "version_string=$VERSION_STRING" >> $GITHUB_ENV
      # the problem with getting the tagged version the same way like above is that at this point in time the tag is ONLY a lightweight one,
      # so we have to take the tag from the context and not via 'git describe' (where we would get the previous one...)
      - name: Set version string if tagged
        if: ${{startsWith(github.ref, 'refs/tags/v')}} # tags start with v see https://docs.github.com/en/actions/learn-github-actions/contexts#github-context
        run: |
          export GIT_COMMIT=`git rev-parse --short HEAD`
          export GIT_TAG=${{github.ref_name}}
          export VERSION_STRING="$GIT_TAG ($GIT_COMMIT)"
          echo "version_string=$VERSION_STRING" >> $GITHUB_ENV
      - name: Verify GITHUB_ENV for version_string
        run: cat $GITHUB_ENV

      # **********
      # ***** start CI *****
      # **********
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3
      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v3
        with:
          install: true # use buildx as default build
      - name: Create build dir
        run: mkdir -p build
      # - name: Env
      #   run: env
      - name: Compile for linux/arm64
        # see https://github.com/docker/buildx/blob/master/docs/reference/buildx_build.md#output this allows that all files created by docker are written somewhere
        run: docker build . --platform linux/arm64 --build-arg VERSION_STRING="${{env.version_string}} arm64" -o type=local,dest=build/arm64 && cd build/arm64/usr/src/app && tar -czf $GITHUB_WORKSPACE/build/sdmon-arm64.tar.gz sdmon
      - name: Compile for linux/armv7
        # see https://github.com/docker/buildx/blob/master/docs/reference/buildx_build.md#output this allows that all files created by docker are written somewhere
        run: docker build . --platform linux/arm/v7 --build-arg VERSION_STRING="${{env.version_string}} armv7" -o type=local,dest=build/armv7 && cd build/armv7/usr/src/app && tar -czf $GITHUB_WORKSPACE/build/sdmon-armv7.tar.gz sdmon
      - name: Compile for linux/armv6
        # see https://github.com/docker/buildx/blob/master/docs/reference/buildx_build.md#output this allows that all files created by docker are written somewhere
        run: docker build . --platform linux/arm/v6 --build-arg VERSION_STRING="${{env.version_string}} armv6" -o type=local,dest=build/armv6 && cd build/armv6/usr/src/app && tar -czf $GITHUB_WORKSPACE/build/sdmon-armv6.tar.gz sdmon
      # **********
      # ***** end of CI *****
      # **********

      - name: Release if tagged
        if: ${{startsWith(github.ref, 'refs/tags/v')}}
        uses: "marvinpinto/action-automatic-releases@latest"
        with:
          repo_token: "${{ secrets.GITHUB_TOKEN }}"
          prerelease: false
          files: |
            build/sdmon-arm64.tar.gz
            build/sdmon-armv7.tar.gz
            build/sdmon-armv6.tar.gz
        id: "automatic_releases_tagged"
      - name: Release if prerelease
        if: ${{startsWith(github.ref, 'refs/heads/master')}}
        uses: "marvinpinto/action-automatic-releases@latest"
        with:
          repo_token: "${{ secrets.GITHUB_TOKEN }}"
          automatic_release_tag: "latest"
          prerelease: true
          title: "Development Build"
          files: |
            build/sdmon-arm64.tar.gz
            build/sdmon-armv7.tar.gz
            build/sdmon-armv6.tar.gz
        id: "automatic_releases_not_tagged"