docker-act_runner/.github/workflows/build.yaml

name: Github Actions Demo
run-name: ${{ github.actor }} is testing out GitHub Actions (on Gitea) 🚀
on:
  push:
    paths-ignore:
    - k/**

jobs:
  Explore-Gitea-Actions:
    runs-on: metal-docker
    steps:
      - name: Check out repository code
        uses: actions/checkout@v3
      - run: |
          ls -la
          docker build --progress plain --iidfile iid.txt .
          stringprefix() { [ ${#1} -le $2 ] && echo $1 && return 0 || stringprefix "${1%?}" $2 ; }
          STAG="$GITHUB_REF_NAME-$(date +%Y-%m-%d-%H.%M.%S)"
          SHORTSHA="$(stringprefix "$GITHUB_SHA" 8)"
          for TAG in "$SHORTSHA" "$GITHUB_REF_NAME" "$STAG";do
            docker tag "`cat iid.txt`" "$DOCKER_REGISTRY/$GITHUB_REPOSITORY:$TAG"
            docker push "$DOCKER_REGISTRY/$GITHUB_REPOSITORY:$TAG"
          done
          sed -i -e "s@image: .*@image: $DOCKER_REGISTRY/$GITHUB_REPOSITORY:$STAG@" k/runner.yaml
          git config user.name "$GITHUB_REPOSITORY (act)"
          git config user.email "gitea-actions@strudelline.net"
          git add k/runner.yaml
          git commit -m "upgrade runner sts to $STAG"
          git push