added security_opt in db

pica-wekan/docker-compose.yml

@@ -54,6 +54,8 @@ services:
         #- wekan-db-dump:/dump
         #volumes:
         #- /DATA/docker/wekan-db:/data/db
+    security_opt:
+      - no-new-privileges
     mem_limit: "2048m"  
     cpus: "0.20"
     pids_limit: 1024