add exec command

control.sh

@@ -8,6 +8,9 @@ else
 fi
 
 case $1 in
+  "exec")
+      docker-compose exec $2 $3
+    ;;
   "ps")
       docker-compose ps
     ;;
@@ -25,7 +28,7 @@ case $1 in
       docker-compose exec -T app python3 websrv.py
     ;;
   "stop")
-      docker-compose stop
+      docker-compose stop $2
     ;;
   "uninstall")
       docker-compose stop