add waiting process

Author: nao1215

.github/workflows/linux_test.yml

@@ -29,8 +29,12 @@ jobs:
         env:
           LOCALSTACK_API_KEY: ${{ secrets.LOCALSTACK_API_KEY }}
           LOCALSTACK_AUTH_TOKEN: ${{ secrets.LOCALSTACK_AUTH_TOKEN }}
+        # https://docs.localstack.cloud/user-guide/ci/github-actions/
         run: |
-          docker compose up
+          docker compose up -d
+          echo "Waiting for LocalStack startup..."
+          sleep 30
+          echo "Startup complete"   
 
       - name: Download dependencies
         run: go mod download