create new pipeline and build file for minimal EE

.gitea/workflows/gitea-actions-minimal.yaml

@@ -45,6 +45,6 @@ jobs:
         uses: https://github.com/docker/build-push-action@v5
         with: 
           context: context-minimal
-          file: context-minimal/Containerfile
+          file: context-minimal/Dockerfile
           push: true
           tags: git.hyperon.be/bram/ultimate-ee-minimal