- add grocery category

- add Dockerfile

docker.env.example

@@ -0,0 +1,11 @@
+# Database Configuration
+DB_PASSWORD=secure_password_123
+
+# Backend Configuration
+SECRET_KEY=your-super-secret-key-change-this-in-production-make-it-very-long-and-random
+DEBUG=False
+
+# Optional: Override default ports if needed
+# FRONTEND_PORT=80
+# BACKEND_PORT=8000
+# DB_PORT=5432