--- a/docker-compose.yml	Tue Apr 23 15:50:12 2019 +0200
+++ b/docker-compose.yml	Tue Apr 23 20:19:02 2019 +0200
@@ -23,6 +23,8 @@
       MYSQL_PASSWORD: wordpress
       MYSQL_RANDOM_ROOT_PASSWORD: '1'
     restart: always
+    healthcheck:
+      test: mysql -h localhost -u wordpress -pwordpress -e"quit" wordpressdb
 
   wp:
     # image: wordpress:php7.3-fpm-alpine