publish.yml

name: Publish
on:
  push:
    tags:
      - 'v[0-9]+.[0-9]+.[0-9]+'
  workflow_dispatch:
    inputs:
      git_tag:
        required: true
        type: string
env:
  GIT_TAG: ${{ github.event.inputs.git_tag || github.ref_name }}
jobs:
  publish:
    runs-on: ubuntu-22.04
    steps:
      - name: Checkout specified tag
        uses: actions/checkout@v3
        with:
          ref: ${{ env.GIT_TAG }}
      - name: Create version tag for Docker image
        run: |
          echo "BUILD_VERSION=$(echo ${GIT_TAG} | sed 's/^v//')" >> $GITHUB_ENV
      - name: Create empty token file
        run: |
          touch token.txt
      - name: Login to Github Container Registry
        uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Build and push tagged Docker image
        uses: docker/build-push-action@v3
        with:
          context: .
          push: true
          tags: |
            ghcr.io/${{ github.repository }}:latest
            ghcr.io/${{ github.repository }}:${{ env.BUILD_VERSION }}