healthcheck ok: app but not for database

docker-compose.yml

@@ -12,6 +12,12 @@ services:
       - MYSQL_PASSWORD=Pa55w0rd
       - MYSQL_DATABASE=nextcloud
       - MYSQL_USER=nextcloud
+    healthcheck:
+      test: ["CMD", "mysqladmin", "ping", "-h", "localhost", "-u", "root", "-pPa55w0rd"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 10s
 
   app:
     image: nextcloud:26.0.0
@@ -27,6 +33,12 @@ services:
       - MYSQL_DATABASE=nextcloud
       - MYSQL_USER=nextcloud
       - MYSQL_HOST=db
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:80"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 10s
 
 
 volumes: