feat: update database configuration in docker-compose

- Add DATABASE_TYPE environment variable
- Update database health checks
- Standardize environment variables across services

docker/docker-compose.yaml

@@ -281,8 +281,10 @@ services:
       # Startup mode, 'api' starts the API server.
       MODE: api
     depends_on:
-      - db
-      - redis
+      db:
+        condition: service_healthy
+      redis:
+        condition: service_healthy
     volumes:
       # Mount the storage directory to the container, for storing user files.
       - ./volumes/app/storage:/app/api/storage
@@ -328,17 +330,20 @@ services:
     restart: always
     networks:
       - dify_network
+      - default
     environment:
       POSTGRES_USER: ${DB_USERNAME:-postgres}
       POSTGRES_PASSWORD: ${DB_PASSWORD:-difyai123456}
       POSTGRES_DB: ${DB_DATABASE:-dify}
+      PGDATA: /var/lib/postgresql/data/pgdata
     volumes:
       - ./volumes/db/data:/var/lib/postgresql/data
     healthcheck:
-      test: ["CMD-SHELL", "pg_isready -U ${DB_USERNAME:-postgres}"]
-      interval: 5s
+      test: ["CMD-SHELL", "pg_isready -U ${DB_USERNAME:-postgres} -d ${DB_DATABASE:-dify}"]
+      interval: 10s
       timeout: 5s
       retries: 5
+      start_period: 30s
 
   # The redis cache.
   redis: