docker-publish.yml

name: Docker

on:
  push:
    # Publish `main` as Docker `latest` image.
    # branches:
    #   - main

    # Publish `v1.2.3` tags as releases.
    tags:
      - v*

env:
  IMAGE_NAME: greeter-server

jobs:
  # Push image to GitHub Packages.
  # See also https://docs.docker.com/docker-hub/builds/
  publish:
    # Ensure test job passes before pushing image.
    # needs: test

    runs-on: ubuntu-latest
    if: github.event_name == 'push'

    steps:
      - uses: actions/checkout@v4

      - name: Login to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Ser the version
        run: echo "VERSION=$(echo "${{ github.ref_name }}")" >> $GITHUB_ENV

      - name: Build and push
        uses: docker/build-push-action@v6
        with:
          push: true
          tags: |
            ghcr.io/${{ github.repository_owner }}/${{ env.IMAGE_NAME }}:latest
            ghcr.io/${{ github.repository_owner }}/${{ env.IMAGE_NAME }}:${{ env.VERSION }}