add test for another action call

action.yaml

@@ -8,5 +8,7 @@ inputs:
     description: 'Who to greet'
     required: true
 runs:
-  using: 'docker'
-  image: 'Dockerfile'
+  using: 'composite'
+  steps:
+    - name: 'Call Another Action'
+      uses: kengo-k/docker-build/internal@main

internal/action.yaml

@@ -0,0 +1,8 @@
+name: 'Publish Docker images'
+description: 'Dockerfileに変更があった場合イメージをビルドしてGHCRにPUSHする'
+
+runs:
+  using: 'composite'
+  steps:
+  - name: Display Hello
+    run: echo "hello"