Update Docker image tagging strategy

Author: ServerSideHannes

.github/workflows/docker-publish.yml

@@ -41,11 +41,9 @@ jobs:
         with:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           tags: |
-            type=ref,event=branch
-            type=ref,event=pr
+            type=raw,value=latest,enable={{is_default_branch}}
+            type=sha,prefix={{branch}}-
             type=semver,pattern={{version}}
-            type=semver,pattern={{major}}.{{minor}}
-            type=sha,prefix=
 
       - name: Build and push Docker image
         uses: docker/build-push-action@v6