Refactor Docker setup for minimal image and update build scripts; adjust static asset serving in production

.forgejo/workflows/build-and-dockerise.yml

@@ -57,11 +57,11 @@ jobs:
             org.opencontainers.image.revision=${{ github.sha }}
             org.opencontainers.image.ref.name=${{ github.ref_name }}
 
-      - name: Build and push Docker image
+      - name: Build and push minimal Docker image
         uses: docker/build-push-action@v5
         with:
           context: .
-          file: ./Dockerfile
+          file: ./Dockerfile  # Uses the Alpine-based minimal container
           push: true
           tags: ${{ steps.meta.outputs.tags }}    # Use tags from metadata step
           labels: ${{ steps.meta.outputs.labels }}  # Use labels from metadata step