fix: use TCP socket health checks for database services

Add bash /dev/tcp health checks to MongoDB (port 27017) and PostgreSQL/
pgvector (port 5432) services, which previously had no health checks.
Update depends_on conditions so dependent services (rag_api, api) wait
for their database dependencies to be healthy before starting.

Files changed: docker-compose.yml, deploy-compose.yml, rag.yml

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

deploy-compose.yml

@@ -9,8 +9,10 @@ services:
     ports:
       - 3080:3080
     depends_on:
-      - mongodb
-      - rag_api
+      mongodb:
+        condition: service_healthy
+      rag_api:
+        condition: service_started
     restart: always
     extra_hosts:
     - "host.docker.internal:host-gateway"
@@ -51,6 +53,12 @@ services:
     volumes:
       - ./data-node:/data/db
     command: mongod --noauth
+    healthcheck:
+      test: ["CMD", "bash", "-c", "echo > /dev/tcp/localhost/27017"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+      start_period: 10s
   meilisearch:
     container_name: chat-meilisearch
     image: getmeili/meilisearch:v1.35.1
@@ -73,6 +81,12 @@ services:
     restart: always
     volumes:
       - pgdata2:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD", "bash", "-c", "echo > /dev/tcp/localhost/5432"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+      start_period: 10s
   rag_api:
     image: registry.librechat.ai/danny-avila/librechat-rag-api-dev-lite:latest
     environment:
@@ -80,7 +94,8 @@ services:
       - RAG_PORT=${RAG_PORT:-8000}
     restart: always
     depends_on:
-      - vectordb
+      vectordb:
+        condition: service_healthy
     env_file:
       - .env