fix docker compose

docker-compose.test.yml

@@ -13,6 +13,10 @@ services:
     volumes:
      - mysql-volume:/var/lib/mysql
      - /srv/initdb/mysql:/docker-entrypoint-initdb.d/
+    healthcheck:
+      test: ["CMD", "mysqladmin", "ping", "-h", "localhost"]
+      timeout: 20s
+      retries: 20
   etherpadsql:
     image: mariadb
     container_name: test_mysql_etherpad
@@ -55,8 +59,10 @@ services:
      MYSQL_PASSWORD: "hgu"
      ETHERPAD_GROUP: "g.snlbqn7S6ksRbom3"
     depends_on:
-    - mysql
-    - etherpad
+      mysql:
+        condition: service_healthy
+      etherpad:
+        condition: service_healthy
     ports:
       - "8005:8080" 
     volumes: