fix: docker-compose pg_url removal; depends on pg -> vectorDB (#5733)

deploy/docker/cn/docker-compose.milvus.yml

@@ -1,5 +1,4 @@
 # 用于部署的 docker-compose 文件:
-# - 向量库为 Pgvector
 # - FastGPT 端口映射为 3000:3000
 # - FastGPT-mcp-server 端口映射 3005:3000
 # - 建议修改账密后再运行
@@ -10,7 +9,7 @@ x-plugin-auth-token: &x-plugin-auth-token 'token'
 x-aiproxy-token: &x-aiproxy-token 'token'
 # 数据库连接相关配置
 x-share-db-config: &x-share-db-config
-  MONGODB_URI: mongodb://username:password@mongo:27017/fastgpt?authSource=admin
+  MONGODB_URI: mongodb://myusername:mypassword@mongo:27017/fastgpt?authSource=admin
   DB_MAX_LINK: 30
   REDIS_URL: redis://default:mypassword@redis:6379
   S3_ENDPOINT: fastgpt-minio
@@ -47,7 +46,6 @@ services:
   # milvus
   milvus-etcd:
     container_name: milvus-etcd
-    image:
     image: quay.io/coreos/etcd:v3.5.5
     environment:
       - ETCD_AUTO_COMPACTION_MODE=revision
@@ -64,7 +62,7 @@ services:
       interval: 30s
       timeout: 20s
       retries: 3
-  milvusStandalone:
+  vectorDB:
     container_name: milvusStandalone
     image: milvusdb/milvus:v2.4.3
     command: ['milvus', 'run', 'standalone']
@@ -158,7 +156,7 @@ services:
     depends_on:
       - mongo
       - sandbox
-      - pg
+      - vectorDB
     restart: always
     environment:
       <<: [*x-share-db-config, *x-vec-config]
@@ -185,9 +183,6 @@ services:
       # AI Proxy 的 Admin Token，与 AI Proxy 中的环境变量 ADMIN_KEY
       AIPROXY_API_TOKEN: *x-aiproxy-token
 
-      # 数据库最大连接数
-      PG_URL: postgresql://username:password@pg:5432/postgres
-
       # 日志等级: debug, info, warn, error
       LOG_LEVEL: info
       STORE_LOG_LEVEL: warn