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/jenkins/.env.example

@@ -0,0 +1,20 @@
+# Jenkins version
+JENKINS_VERSION=2.486-lts-jdk17
+
+# Timezone
+TZ=UTC
+
+# Jenkins options
+JENKINS_OPTS=--httpPort=8080
+JAVA_OPTS=-Djenkins.install.runSetupWizard=false -Xmx2g
+
+# Configuration as Code
+CASC_JENKINS_CONFIG=/var/jenkins_home/casc_configs
+
+# User and group IDs (adjust to match your host user)
+JENKINS_USER_ID=1000
+JENKINS_GROUP_ID=1000
+
+# Port overrides (optional)
+# JENKINS_HTTP_PORT_OVERRIDE=8080
+# JENKINS_AGENT_PORT_OVERRIDE=50000