docker.yml

# GitHub actions workflow which builds and publishes the docker images for tags.


name: Build docker images

on:
  push:
    tags: ["v*"]

permissions:
  contents: read

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2

      - name: Log in to DockerHub
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKER_HUB_USERNAME }}
          password: ${{ secrets.DOCKER_HUB_TOKEN }}

      - name: Calculate docker image tag
        id: set-tag
        uses: docker/metadata-action@v4
        with:
          images: matrixdotorg/federation-tester-backend
          tags: |
            type=ref,event=tag

            # if this isn't a tag, use the sha
            type=sha,format=long

      - name: Build and push
        uses: docker/build-push-action@v3
        with:
          push: true
          labels: "gitsha1=${{ github.sha }}"
          tags: "${{ steps.set-tag.outputs.tags }}"