fix(ci): specify Containerfile explicitly in docker build

Author: librefos

.github/workflows/publish-image.yml

@@ -16,5 +16,5 @@ jobs:
 
       - name: Build and push
         run: |
-          docker build -t ghcr.io/${{ github.repository_owner }}/texlive-cv:latest .
+          docker build -f Containerfile -t ghcr.io/${{ github.repository_owner }}/texlive-cv:latest .
           docker push ghcr.io/${{ github.repository_owner }}/texlive-cv:latest