Unify MySQL configuration (#12644)

### What problem does this PR solve?

Align MySQL defaults between docker/.env and
docker/service_conf.yaml.template
close #12645

### Type of change

- [x] Other (please describe):Unify MySQL configuration

docker/.env

@@ -113,9 +113,12 @@ MYSQL_PASSWORD=infini_rag_flow
 MYSQL_HOST=mysql
 # The database of the MySQL service to use
 MYSQL_DBNAME=rag_flow
+# The port used to connect to MySQL from RAGFlow container.
+# Change this if you use external MySQL.
+MYSQL_PORT=3306
 # The port used to expose the MySQL service to the host machine,
 # allowing EXTERNAL access to the MySQL database running inside the Docker container.
-MYSQL_PORT=5455
+EXPOSE_MYSQL_PORT=5455
 # The maximum size of communication packets sent to the MySQL server
 MYSQL_MAX_PACKET=1073741824
 

docker/README.md

@@ -52,6 +52,8 @@ The [.env](./.env) file contains important environment variables for Docker.
 - `MYSQL_PASSWORD`  
   The password for MySQL.
 - `MYSQL_PORT`  
+  The port to connect to MySQL from RAGFlow container. Defaults to `3306`. Change this if you use an external MySQL.
+- `EXPOSE_MYSQL_PORT`  
   The port used to expose the MySQL service to the host machine, allowing **external** access to the MySQL database running inside the Docker container. Defaults to `5455`.
 
 ### MinIO

docker/docker-compose-base.yml

@@ -188,7 +188,7 @@ services:
       --init-file /data/application/init.sql
       --binlog_expire_logs_seconds=604800
     ports:
-      - ${MYSQL_PORT}:3306
+      - ${EXPOSE_MYSQL_PORT}:3306
     volumes:
       - mysql_data:/var/lib/mysql
       - ./init.sql:/data/application/init.sql

docker/service_conf.yaml.template

@@ -9,7 +9,7 @@ mysql:
   user: '${MYSQL_USER:-root}'
   password: '${MYSQL_PASSWORD:-infini_rag_flow}'
   host: '${MYSQL_HOST:-mysql}'
-  port: 3306
+  port: ${MYSQL_PORT:-3306}
   max_connections: 900
   stale_timeout: 300
   max_allowed_packet: ${MYSQL_MAX_PACKET:-1073741824}