enforce startup order in docker-compose.yml

deploy/dev/docker-compose.yml

@@ -6,11 +6,17 @@ services:
     command: bash -c 'python manage.py migrate && python manage.py runserver 0.0.0.0:8000'
     environment:
       - HTTP_HOST=core
-      #- DATABASE_URL
+      - DB_HOST=db
+      - DB_PORT=3306
+      - DB_NAME=system3
+      - DB_USER=system3
+      - DB_PASSWORD=system3
     volumes:
       - ../../core:/code
     ports:
       - "8000:8000"
+    depends_on:
+      - db
 
   frontend:
     build:
@@ -23,6 +29,8 @@ services:
       - ./vue.config.js:/web/vue.config.js
     ports:
       - "8080:8080"
+    depends_on:
+      - core
 
   db:
     image: mariadb
@@ -30,4 +38,11 @@ services:
       MARIADB_RANDOM_ROOT_PASSWORD: true
       MARIADB_DATABASE: system3
       MARIADB_USER: system3
-      MARIADB_PASSWORD: system3
+      MARIADB_PASSWORD: system3
+    volumes:
+      - mariadb_data:/var/lib/mysql
+    ports:
+      - "3306:3306"
+
+volumes:
+  mariadb_data: