.github/workflows/dco.yml


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name: DCO check

on:
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]

jobs:
  dco:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
      with:
        ref: ${{ github.event.after }}
    - name: check Signed-off-by
      run: |
        __COMMIT_MSG="$(git log --format=%B -n 1 ${{ github.event.after }})"
        if [[ ! ${__COMMIT_MSG} =~ "Signed-off-by:" ]]; then
          __errmsg="::error ::Missing GCO sign-off
            Please read the terms of Gentoo Certificate of Origin[1] and acknowledge them by adding a sign-off to all your commits.
            [1] https://www.gentoo.org/glep/glep-0076.html#certificate-of-origin"
          __errmsg="${__errmsg//'%'/'%25'}"
          __errmsg="${__errmsg//$'\n'/'%0A'}"
          __errmsg="${__errmsg//$'\r'/'%0D'}"

          echo "${__errmsg}"
          exit 1
        else
          echo "::set-output name=dco::ok"
        fi