fix

action.yml

@@ -15,7 +15,7 @@ runs:
       args: dotnet publish -r linux-x64 -c Release --self-contained -o dist -p:AssemblyName=App
 
   - name: create dockerfile
-    if: ${{ inputs.default }} == ''
+    if: ${{ inputs.dockerfile }} == ''
     uses: docker://ubuntu:latest
     with:
       entrypoint: "/bin/bash"