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/oceanbase/.env.example

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+# OceanBase version
+OCEANBASE_VERSION=4.3.3.1-106000012024110114
+
+# Timezone
+TZ=UTC
+
+# Root password
+OB_ROOT_PASSWORD=oceanbase
+
+# Cluster configuration
+OB_CLUSTER_NAME=obcluster
+OB_TENANT_NAME=test
+OB_TENANT_PASSWORD=oceanbase
+
+# Resource limits
+OB_MEMORY_LIMIT=8G
+OB_DATAFILE_SIZE=10G
+OB_LOG_DISK_SIZE=6G
+
+# Port overrides (optional)
+# OCEANBASE_SQL_PORT_OVERRIDE=2881
+# OCEANBASE_RPC_PORT_OVERRIDE=2882

src/oceanbase/README.md

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+# OceanBase
+
+OceanBase is a distributed relational database developed by Ant Group. It features high availability, high scalability, and is compatible with MySQL.
+
+## Usage
+
+```bash
+docker compose up -d
+```
+
+## Configuration
+
+Key environment variables:
+
+- `OB_ROOT_PASSWORD`: Root user password (default: `oceanbase`)
+- `OB_TENANT_NAME`: Tenant name (default: `test`)
+- `OB_TENANT_PASSWORD`: Tenant password (default: `oceanbase`)
+- `OB_MEMORY_LIMIT`: Memory limit (default: `8G`, minimum: `8G`)
+- `OB_DATAFILE_SIZE`: Data file size (default: `10G`)
+- `OB_LOG_DISK_SIZE`: Log disk size (default: `6G`)
+
+## Ports
+
+- `2881`: MySQL protocol port
+- `2882`: RPC port
+
+## Connection
+
+Connect using MySQL client:
+
+```bash
+mysql -h127.0.0.1 -P2881 -uroot@test -poceanbase
+```
+
+Or connect to sys tenant:
+
+```bash
+mysql -h127.0.0.1 -P2881 -uroot -poceanbase
+```
+
+## Notes
+
+- OceanBase requires at least 8GB of memory to run properly
+- First startup may take several minutes to initialize
+- Use `slim` mode for development/testing environments
+- For production, consider using `normal` mode and a dedicated cluster
+
+## References
+
+- [OceanBase Official Documentation](https://www.oceanbase.com/docs)
+- [OceanBase Docker Hub](https://hub.docker.com/r/oceanbase/oceanbase-ce)

src/oceanbase/README.zh.md

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+# OceanBase
+
+OceanBase 是由蚂蚁集团开发的分布式关系型数据库，具有高可用、高扩展性的特点，并兼容 MySQL 协议。
+
+## 使用方法
+
+```bash
+docker compose up -d
+```
+
+## 配置说明
+
+主要环境变量：
+
+- `OB_ROOT_PASSWORD`：root 用户密码（默认：`oceanbase`）
+- `OB_TENANT_NAME`：租户名称（默认：`test`）
+- `OB_TENANT_PASSWORD`：租户密码（默认：`oceanbase`）
+- `OB_MEMORY_LIMIT`：内存限制（默认：`8G`，最小：`8G`）
+- `OB_DATAFILE_SIZE`：数据文件大小（默认：`10G`）
+- `OB_LOG_DISK_SIZE`：日志磁盘大小（默认：`6G`）
+
+## 端口说明
+
+- `2881`：MySQL 协议端口
+- `2882`：RPC 端口
+
+## 连接方式
+
+使用 MySQL 客户端连接：
+
+```bash
+mysql -h127.0.0.1 -P2881 -uroot@test -poceanbase
+```
+
+或连接到 sys 租户：
+
+```bash
+mysql -h127.0.0.1 -P2881 -uroot -poceanbase
+```
+
+## 注意事项
+
+- OceanBase 需要至少 8GB 内存才能正常运行
+- 首次启动可能需要几分钟时间进行初始化
+- 使用 `slim` 模式适合开发/测试环境
+- 生产环境建议使用 `normal` 模式和专用集群
+
+## 参考资料
+
+- [OceanBase 官方文档](https://www.oceanbase.com/docs)
+- [OceanBase Docker Hub](https://hub.docker.com/r/oceanbase/oceanbase-ce)

src/oceanbase/docker-compose.yaml

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+x-default: &default
+  restart: unless-stopped
+  logging:
+    driver: json-file
+    options:
+      max-size: 100m
+      max-file: "3"
+
+services:
+  oceanbase:
+    <<: *default
+    image: oceanbase/oceanbase-ce:${OCEANBASE_VERSION:-4.3.3.1-106000012024110114}
+    environment:
+      TZ: ${TZ:-UTC}
+      MODE: slim
+      OB_ROOT_PASSWORD: ${OB_ROOT_PASSWORD:-oceanbase}
+      OB_CLUSTER_NAME: ${OB_CLUSTER_NAME:-obcluster}
+      OB_TENANT_NAME: ${OB_TENANT_NAME:-test}
+      OB_TENANT_PASSWORD: ${OB_TENANT_PASSWORD:-oceanbase}
+      OB_MEMORY_LIMIT: ${OB_MEMORY_LIMIT:-8G}
+      OB_DATAFILE_SIZE: ${OB_DATAFILE_SIZE:-10G}
+      OB_LOG_DISK_SIZE: ${OB_LOG_DISK_SIZE:-6G}
+    volumes:
+      - oceanbase_data:/root/ob
+    ports:
+      - "${OCEANBASE_SQL_PORT_OVERRIDE:-2881}:2881"
+      - "${OCEANBASE_RPC_PORT_OVERRIDE:-2882}:2882"
+    deploy:
+      resources:
+        limits:
+          cpus: '4.0'
+          memory: 10G
+        reservations:
+          cpus: '2.0'
+          memory: 8G
+    healthcheck:
+      test: ["CMD-SHELL", "mysql -h127.0.0.1 -P2881 -uroot -p$$OB_ROOT_PASSWORD -e 'SELECT 1' || exit 1"]
+      interval: 30s
+      timeout: 10s
+      retries: 5
+      start_period: 120s
+
+volumes:
+  oceanbase_data: