Laravel, MySQL, Nginx, Docker debugging

.env

APP_NAME=LaravelProject
APP_ENV=local
APP_KEY=base64:M+MYThnHCBoOOxUoVbApYgTL74HfnAtEUsNfUVuBWW8=
APP_DEBUG=true
APP_URL=http://localhost:8080

LOG_CHANNEL=stack

DB_CONNECTION=mysql
DB_HOST=mysql
DB_PORT=3306
DB_DATABASE=laratest
DB_USERNAME=laravel
DB_PASSWORD=secret

BROADCAST_DRIVER=log
CACHE_DRIVER=file
QUEUE_CONNECTION=sync
SESSION_DRIVER=file
SESSION_LIFETIME=120

REDIS_HOST=127.0.0.1
REDIS_PASSWORD=null
REDIS_PORT=6379

MAIL_DRIVER=smtp
MAIL_HOST=smtp.mailtrap.io
MAIL_PORT=2525
MAIL_USERNAME=null
MAIL_PASSWORD=null
MAIL_ENCRYPTION=null

AWS_ACCESS_KEY_ID=
AWS_SECRET_ACCESS_KEY=
AWS_DEFAULT_REGION=us-east-1
AWS_BUCKET=

PUSHER_APP_ID=
PUSHER_APP_KEY=
PUSHER_APP_SECRET=
PUSHER_APP_CLUSTER=mt1

MIX_PUSHER_APP_KEY="${PUSHER_APP_KEY}"
MIX_PUSHER_APP_CLUSTER="${PUSHER_APP_CLUSTER}"

docker network inspect laravel

[
    {
        "Name": "laratestdocker_laravel",
        "Id": "5ec33a4e8048cd0881ba40849bf2716b1fe622f8aa202562fea09ddd5df7fb52",
        "Created": "2019-10-28T12:42:50.947128413+01:00",
        "Scope": "local",
        "Driver": "bridge",
        "EnableIPv6": false,
        "IPAM": {
            "Driver": "default",
            "Options": null,
            "Config": [
                {
                    "Subnet": "172.23.0.0/16",
                    "Gateway": "172.23.0.1"
                }
            ]
        },
        "Internal": false,
        "Attachable": true,
        "Ingress": false,
        "ConfigFrom": {
            "Network": ""
        },
        "ConfigOnly": false,
        "Containers": {
            "fafa820922f5ba0bf1b1b2bf0ccfab0f910767bf451894059d1ab2a52c0940d1": {
                "Name": "php",
                "EndpointID": "f1fe2b4bff185f6dfdcffb5bb5c073b49a62d19a6e609814ba2836a001ee816c",
                "MacAddress": "02:42:ac:17:00:02",
                "IPv4Address": "172.23.0.2/16",
                "IPv6Address": ""
            },
            "fe947ee1765caf2d3e97e6957943b189b00cd95e765010493fd24116b787c15e": {
                "Name": "nginx",
                "EndpointID": "dc1531a9abfb6595665d19f84b06a084780ea1418eaa5f34f4e192756834a48d",
                "MacAddress": "02:42:ac:17:00:04",
                "IPv4Address": "172.23.0.4/16",
                "IPv6Address": ""
            }
        },
        "Options": {},
        "Labels": {
            "com.docker.compose.network": "laravel",
            "com.docker.compose.project": "laratestdocker",
            "com.docker.compose.version": "1.24.1"
        }
    }
]

docker-compose.yml

version: '3'

networks:
  laravel:

services:
  nginx:
    image: nginx:stable-alpine
    container_name: nginx
    ports:
      - "8080:80"
    volumes:
      - ./src:/var/www
      - ./nginx/default.conf:/etc/nginx/conf.d/default.conf
    depends_on:
      - php
      - mysql
    networks:
      - laravel

  mysql:
    image: mysql:5.7.22
    container_name: mysql
    restart: unless-stopped
    tty: true
    ports:
      - "3306:3306"
    environment:
      MYSQL_DATABASE: laratest
      MYSQL_USER: laravel
      MYSQL_PASSWORD: secret
      MYSQL_ROOT_PASSWORD: secret
      SERVICE_TAGS: dev
      SERVICE_NAME: mysql
    networks:
      - laravel

  php:
    build:
      context: .
      dockerfile: Dockerfile
    container_name: php
    volumes:
     - ./src:/var/www
    ports:
     - "9000:9000"
    networks:
     - laravel

docker network inspect laravel doesn't show the "mysql" container (just nginx and php). Is this OK?