Merge pull request #34 from jansule/publish-to-github

ci: publish docker image to github registry

.github/workflows/hugo.yml

@@ -31,19 +31,24 @@ jobs:
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v1
 
-    - name: Login to Nexus
-      uses: docker/login-action@v1
+    - name: Log in to the Container registry
+      uses: docker/login-action@3b8fed7e4b60203b2aa0ecc6c6d6d91d12c06760
       with:
-        registry: nexus.terrestris.de
-        username: ${{ secrets.NEXUS_USERNAME }}
-        password: ${{ secrets.NEXUS_TOKEN }}
+        registry: ${{ env.REGISTRY }}
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
 
-    - name: build and push
-      id: docker_build
-      uses: docker/build-push-action@v2
+    - name: Extract metadata (tags, labels) for Docker
+      id: meta
+      uses: docker/metadata-action@70b2cdc6480c1a8b86edf1777157f8f437de2166
+      with:
+        images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+
+    - name: Build and push Docker image
+      id: push
+      uses: docker/build-push-action@4f58ea79222b3b9dc2c8bbdd6debcef730109a75
       with:
-        push: true
         context: .
-        tags: |
-          nexus.terrestris.de/geostyler/geostyler-homepage:latest
-          nexus.terrestris.de/geostyler/geostyler-homepage:${{ github.ref_name }}
+        push: true
+        tags: ${{ steps.meta.outputs.tags }}
+        labels: ${{ steps.meta.outputs.labels }}