diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index f99f2e3..ab0d053 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -38,7 +38,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: Extract metadata (tags, labels) for Docker
         env:
-          IMAGE: ${{ matrix.image }}
+          IMAGE: ${{ matrix.image }}.Dockerfile
         id: meta
         run: |
           echo "tag=$(grep FROM $IMAGE | cut -d: -f2)" >> "$GITHUB_OUTPUT"
@@ -50,7 +50,7 @@ jobs:
         uses: docker/build-push-action@v6
         with:
           context: .
-          file: ${{ matrix.image }}
+          file: ${{ matrix.image }}.Dockerfile
           push: ${{ github.ref == 'refs/heads/main' }}
           tags: |
             ${{ env.REGISTRY }}/${{ env.REPO_NAME }}/${{ matrix.image }}:${{ steps.meta.outputs.tag }}
diff --git a/rig-rocky8 b/rig-rocky8.Dockerfile
similarity index 100%
rename from rig-rocky8
rename to rig-rocky8.Dockerfile
diff --git a/rig-ubuntu b/rig-ubuntu.Dockerfile
similarity index 100%
rename from rig-ubuntu
rename to rig-ubuntu.Dockerfile
diff --git a/tofutf b/tofutf.Dockerfile
similarity index 100%
rename from tofutf
rename to tofutf.Dockerfile