diff --git a/.gitignore b/.gitignore
index 6067706..b49c209 100644
--- a/.gitignore
+++ b/.gitignore
@@ -40,6 +40,7 @@ nbdist/
 *.log
 *.xml.versionsBackup
 *.swp
+tmp
 
 !*/build/*.java
 !*/build/*.html
diff --git a/docker/copy.sh b/docker/copy.sh
index 3ba0f2a..b2d9991 100755
--- a/docker/copy.sh
+++ b/docker/copy.sh
@@ -12,6 +12,7 @@ echo "begin copy sql "
 cp ../sql/wfc_config_db/wfc_config_db.sql ./mysql/db
 cp ../sql/wfc_system_db/wfc_system_db.sql ./mysql/db
 cp ../sql/wfc_user_db/wfc_user_db.sql ./mysql/db
+ln -sf /tmp ./mysql/
 
 # copy html
 echo "begin copy system html "