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apps/dify/README.md

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+# Dify
+
+[English](./README.md) | [中文](./README.zh.md)
+
+This service deploys Dify, an LLM app development platform that combines AI workflow, RAG pipeline, agent capabilities, model management, observability features and more.
+
+## Services
+
+- `dify-api`: API service for Dify
+- `dify-worker`: Background worker for async tasks
+- `dify-web`: Web frontend interface
+- `dify-db`: PostgreSQL database
+- `dify-redis`: Redis cache
+- `dify-weaviate`: Weaviate vector database (optional profile)
+
+## Environment Variables
+
+| Variable Name      | Description                                | Default Value |
+| ------------------ | ------------------------------------------ | ------------- |
+| DIFY_VERSION       | Dify image version                         | `0.18.2`      |
+| POSTGRES_USER      | PostgreSQL username                        | `dify`        |
+| POSTGRES_PASSWORD  | PostgreSQL password                        | `difypass`    |
+| POSTGRES_DB        | PostgreSQL database name                   | `dify`        |
+| REDIS_PASSWORD     | Redis password (empty for no auth)         | `""`          |
+| SECRET_KEY         | Secret key for encryption                  | (auto)        |
+| LOG_LEVEL          | Log level                                  | `INFO`        |
+| DIFY_PORT_OVERRIDE | Host port mapping for web interface        | `3000`        |
+| STORAGE_TYPE       | Storage type (local, s3, azure-blob, etc.) | `local`       |
+| VECTOR_STORE       | Vector store type (weaviate, milvus, etc.) | `weaviate`    |
+| WEAVIATE_VERSION   | Weaviate version (if using weaviate)       | `1.28.12`     |
+
+Please modify the `.env` file as needed for your use case.
+
+## Volumes
+
+- `dify_storage`: Storage for uploaded files and generated content
+- `dify_db_data`: PostgreSQL data
+- `dify_redis_data`: Redis persistence data
+- `dify_weaviate_data`: Weaviate vector database data
+
+## Usage
+
+### Start Dify with Weaviate
+
+```bash
+docker compose --profile weaviate up -d
+```
+
+### Start Dify without Vector Database
+
+```bash
+docker compose up -d
+```
+
+### Access
+
+- Web Interface: <http://localhost:3000>
+- API Docs: <http://localhost:5001/docs>
+
+### First Time Setup
+
+1. Open <http://localhost:3000>
+2. Create an admin account
+3. Configure your LLM API keys (OpenAI, Azure OpenAI, Anthropic, etc.)
+4. Start creating your AI applications
+
+## Notes
+
+- First startup may take a few minutes for database initialization
+- Change `SECRET_KEY` in production for security
+- For production deployment, consider using external PostgreSQL and Redis
+- Supports multiple LLM providers: OpenAI, Azure OpenAI, Anthropic, Google, local models via Ollama, etc.
+- Vector database is optional but recommended for RAG capabilities
+
+## Security
+
+- Change default passwords in production
+- Use strong `SECRET_KEY`
+- Enable authentication on Redis in production
+- Consider using TLS for API connections in production
+
+## License
+
+Dify is licensed under Apache License 2.0. See [Dify GitHub](https://github.com/langgenius/dify) for more information.