Merge pull request #355 from smart-on-fhir/mikix/docker-major-version

docker: tag releases with the major version number too

Author: mikix

.github/workflows/docker-hub.yaml

@@ -12,15 +12,23 @@ jobs:
     name: Build and push image
     runs-on: ubuntu-latest
     steps:
+      - uses: actions/checkout@v4
+
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
+      - name: Grab version
+        run: echo "ETL_VERSION=$(grep __version__ cumulus_etl/__init__.py | cut -d'"' -f2)" >> $GITHUB_ENV
+
       - name: Get Docker metadata
         id: meta
         uses: docker/metadata-action@v5
         with:
           flavor: latest=true
           images: smartonfhir/cumulus-etl
+          tags: |
+            type=ref,event=branch
+            type=pep440,pattern={{major}},value=${{ env.ETL_VERSION }}
 
       - name: Log in to Docker Hub
         uses: docker/login-action@v3