diff --git a/action.yml b/action.yml
index 8d04608..4175069 100644
--- a/action.yml
+++ b/action.yml
@@ -14,12 +14,14 @@ runs:
           username: ${{env.DOCKER_USER}}
           password: ${{env.DOCKER_PASS}}
 
-      - shell: sh
-        run: |
-          echo "FROM mcr.microsoft.com/dotnet/runtime:7.0" > Dockerfile
-          echo "COPY dist /home" >> Dockerfile
-          echo "WORKDIR /home" >> Dockerfile
-          echo "ENTRYPOINT [\"./App\"]" >> Dockerfile
+      - uses: docker://ubuntu
+        with:
+          entrypoint: "bash -c"
+          args: |
+            echo "FROM mcr.microsoft.com/dotnet/runtime:7.0" > Dockerfile
+            echo "COPY dist /home" >> Dockerfile
+            echo "WORKDIR /home" >> Dockerfile
+            echo "ENTRYPOINT [\"./App\"]" >> Dockerfile
 
       - uses: docker://docker:cli
         with: