publish-stable.yaml

---
name: publish-stable

# Actions that take place on 'official' tags.
#
# An official tag is a 2 or 3-digit value (i.e. 'N.N[.N]').
# Under these conditions we publish images using 'stable' as s tag.

# -----------------
# Control variables (GitHub Secrets)
# -----------------
#
# At the GitHub 'organisation' or 'project' level you must have the following
# GitHub 'Repository Secrets' defined (i.e. via 'Settings -> Secrets'): -
#
# DOCKERHUB_USERNAME
# DOCKERHUB_TOKEN
#
# -----------
# Environment (GitHub Environments)
# -----------
#
# Environment         (n/a)

on:
  push:
    tags:
    - '[0-9]+.[0-9]+.[0-9]+'
    - '[0-9]+.[0-9]+'

jobs:
  publish:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout
      uses: actions/checkout@v4
    - name: Inject slug/short variables
      uses: rlespinasse/github-slug-action@v4
    - name: Login to DockerHub
      uses: docker/login-action@v3
      with:
        username: ${{ secrets.DOCKERHUB_USERNAME }}
        password: ${{ secrets.DOCKERHUB_TOKEN }}
    - name: Set up QEMU
      uses: docker/setup-qemu-action@v3
    - name: Set up Docker Buildx
      uses: docker/setup-buildx-action@v3
    - name: Set lower-case REPOSITORY
      run: |
        echo "REPOSITORY=$(echo ${{ github.repository }} | tr '[:upper:]' '[:lower:]')" >> $GITHUB_ENV
    - name: Build and push
      uses: docker/build-push-action@v3
      with:
        platforms: linux/amd64,linux/arm64
        push: true
        tags: ${{ env.REPOSITORY }}:stable