Add environment configuration and documentation for various services

- Created .env.example files for Kafka, Kibana, KodBox, Kong, Langfuse, Logstash, n8n, Nginx, OceanBase, OpenCoze, RocketMQ, TiDB, and TiKV.
- Added README.md and README.zh.md files for OceanBase, RocketMQ, TiDB, and TiKV, detailing usage, configuration, and access instructions.
- Implemented docker-compose.yaml files for OceanBase, RocketMQ, TiDB, and TiKV, defining service configurations, health checks, and resource limits.
- Included broker.conf for RocketMQ to specify broker settings.
- Established a consistent timezone (UTC) across all services.
- Provided optional port overrides in .env.example files for flexibility in deployment.

src/rocketmq/README.md

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+# RocketMQ
+
+Apache RocketMQ is a distributed messaging and streaming platform with low latency, high performance and reliability, trillion-level capacity and flexible scalability.
+
+## Usage
+
+```bash
+docker compose up -d
+```
+
+## Components
+
+This setup includes:
+
+- **NameServer**: Manages broker routing information
+- **Broker**: Stores and delivers messages
+- **Dashboard**: Web UI for monitoring and management
+
+## Configuration
+
+The broker configuration is in `broker.conf`. Key settings:
+
+- `brokerClusterName`: Cluster name
+- `brokerName`: Broker name
+- `autoCreateTopicEnable`: Auto-create topics (enabled by default)
+- `flushDiskType`: Disk flush strategy (`ASYNC_FLUSH` for better performance)
+
+## Ports
+
+- `9876`: NameServer port
+- `10909`: Broker listening port (fastRemotingServer)
+- `10911`: Broker port (remoting server)
+- `10912`: Broker HA port
+- `8080`: Dashboard Web UI
+
+## Access
+
+### Dashboard
+
+Access the RocketMQ Dashboard at: <http://localhost:8080>
+
+### Command Line Tools
+
+Execute admin commands:
+
+```bash
+# List clusters
+docker compose exec broker mqadmin clusterList -n namesrv:9876
+
+# List topics
+docker compose exec broker mqadmin topicList -n namesrv:9876
+
+# Create topic
+docker compose exec broker mqadmin updateTopic -n namesrv:9876 -c DefaultCluster -t TestTopic
+
+# Query message
+docker compose exec broker mqadmin queryMsgById -n namesrv:9876 -i <messageId>
+```
+
+## Example: Send and Receive Messages
+
+```bash
+# Send messages
+docker compose exec broker sh /home/rocketmq/rocketmq/bin/tools.sh org.apache.rocketmq.example.quickstart.Producer
+
+# Consume messages
+docker compose exec broker sh /home/rocketmq/rocketmq/bin/tools.sh org.apache.rocketmq.example.quickstart.Consumer
+```
+
+## Client Connection
+
+Configure your RocketMQ client to connect to:
+
+- NameServer: `localhost:9876`
+
+## Notes
+
+- This is a single-master setup suitable for development
+- For production, use a multi-master or multi-master-multi-slave setup
+- Adjust JVM heap sizes in `JAVA_OPT_EXT` based on your needs
+- Data is persisted in named volumes
+
+## References
+
+- [RocketMQ Official Documentation](https://rocketmq.apache.org/docs/quick-start/)
+- [RocketMQ Docker Hub](https://hub.docker.com/r/apache/rocketmq)
+- [RocketMQ Dashboard](https://github.com/apache/rocketmq-dashboard)