redmine update

redmine/docker-compose.yml

@@ -3,7 +3,7 @@ version: '3.1'
 services:
 
   redmine:
-    image: redmine:${REDMINE_VERSION:-latest}
+    image: redmine:${REDMINE_VERSION}
     restart: always
     environment:
       REDMINE_DB_MYSQL: ${REDMINE_DB_MYSQL}