readme.yml

name: update README.md
on:
  pull_request:
    types: [closed]
jobs:
  readme:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: "0"
      - name: Update datasource in Dockerfile
        run: |
          sed \
            --regexp-extended \
            --quiet \
            's/.*alpine:([0-9]).([0-9]+).*/\1 \2/p' Dockerfile | \
          xargs \
            --max-args=2 \
            bash \
            -c \
              'sed \
                --in-place \
                --regexp-extended \
                "s/alpine_[0-9]_[0-9]+/alpine_${0}_${1}/" Dockerfile'
      - name: Update component versions in README.md
        run: |
          sed \
            --regexp-extended \
            --quiet \
            's/(ARG|ENV)\s*(.*)_VERSION(=|\s*)(.*)/\L\2 (\4)/p' Dockerfile | \
          xargs \
            --max-args=2 \
            bash \
            -c \
              'sed \
                --in-place \
                --regexp-extended \
                "s/${0}.*$/${0} ${1}/" README.md'
      - name: Update alpine version in README.md
        run: |
          sed \
            --regexp-extended \
            --quiet \
            's/FROM\s+alpine:(.*)/(\1)/p' Dockerfile | \
          xargs \
            bash \
            -c \
              'sed \
                --in-place \
                --regexp-extended \
                "s/linux (.*) with/linux ${0} with/" README.md'
      - name: Push updated README.md
        uses: EndBug/add-and-commit@v9
        with:
          message: "README: update version"
          default_author: github_actions