fix: Make the github action work with the Containerfile

Author: ksobrenat32

.github/workflows/ci.yml

@@ -47,6 +47,7 @@ jobs:
     - name: Build and push
       uses: docker/build-push-action@v5
       with:
+        file: ./Containerfile
         push: true
         tags: |
           ghcr.io/${{ env.REPO }}:${{ github.ref_name }}