diff --git a/docker/.env.example b/docker/.env.example
index cf09f72bce..d1f53bb789 100644
--- a/docker/.env.example
+++ b/docker/.env.example
@@ -49,7 +49,7 @@ FILES_URL=
 # Supported values are `DEBUG`, `INFO`, `WARNING`, `ERROR`, `CRITICAL`
 LOG_LEVEL=INFO
 # Log file path
-LOG_FILE=
+LOG_FILE=/app/logs/server.log
 # Log file max size, the unit is MB
 LOG_FILE_MAX_SIZE=20
 # Log file max backup count
@@ -916,4 +916,4 @@ POSITION_PROVIDER_EXCLUDES=
 CSP_WHITELIST=
 
 # Enable or disable create tidb service job
-CREATE_TIDB_SERVICE_JOB_ENABLED=false
\ No newline at end of file
+CREATE_TIDB_SERVICE_JOB_ENABLED=false