refactor docker setup

docker-compose.yml

@@ -0,0 +1,51 @@
+version: '3.7'
+
+services:
+  app:
+    build:
+      args:
+        user: crater-user
+        uid: 1000
+      context: ./
+      dockerfile: Dockerfile
+    image: crater-php
+    container_name: crater-app
+    restart: unless-stopped
+    working_dir: /var/www/
+    volumes:
+      - ./:/var/www
+    networks:
+      - crater
+
+  db:
+    image: mariadb
+    restart: always
+    volumes:
+      - db:/var/lib/mysql
+    environment:
+      MYSQL_USER: crater
+      MYSQL_PASSWORD: crater
+      MYSQL_DATABASE: crater
+      MYSQL_ROOT_PASSWORD: crater
+    ports:
+      - '33006:3306'
+    networks:
+      - crater
+
+  nginx:
+    image: nginx:1.17-alpine
+    restart: unless-stopped
+    ports:
+      - 8080:80
+    volumes:
+      - ./:/var/www
+      - ./docker-compose/nginx:/etc/nginx/conf.d/
+    networks:
+      - crater
+
+volumes:
+  db:
+
+networks:
+  crater:
+    driver: bridge