My docker-compose.yml couldn't build mysql5.7 container - docker

Question

I'm trying to build docker container for laravel with docker-compose.yml.
I hove to build database container for mysql5.7.
Mysql8 cannot be used on my server witch connected.
There is my docker-compose.yml file.
version: "3"
services:
app:
build:
context: ./docker/php
args:
- TZ=${TZ}
ports:
- ${APP_PORT}:8000
volumes:
- ${PROJECT_PATH}:/work
- ./docker/ash:/etc/profile.d
- ./docker/php/psysh:/root/.config/psysh
- ./logs:/var/log/php
- ./docker/php/php.ini:/usr/local/etc/php/php.ini
working_dir: /work
environment:
- DB_CONNECTION=mysql
- DB_HOST=db
- DB_DATABASE=${DB_NAME}
- DB_USERNAME=${DB_USER}
- DB_PASSWORD=${DB_PASS}
- TZ=${TZ}
- MAIL_HOST=${MAIL_HOST}
- MAIL_PORT=${MAIL_PORT}
- CACHE_DRIVER=redis
- SESSION_DRIVER=redis
- QUEUE_DRIVER=redis
- REDIS_HOST=redis
web:
image: nginx:1.17-alpine
depends_on:
- app
ports:
- ${WEB_PORT}:80
volumes:
- ${PROJECT_PATH}:/work
- ./logs:/var/log/nginx
- ./docker/nginx/default.conf:/etc/nginx/conf.d/default.conf
environment:
- TZ=${TZ}
db:
image: mysql:5.7
volumes:
- db-store:/var/lib/mysql
- ./logs:/var/log/mysql
- ./docker/mysql/my.cnf:/etc/mysql/conf.d/my.cnf
environment:
- MYSQL_DATABASE=${DB_NAME}
- MYSQL_USER=${DB_USER}
- MYSQL_PASSWORD=${DB_PASS}
- MYSQL_ROOT_PASSWORD=${DB_PASS}
- TZ=${TZ}
ports:
- ${DB_PORT}:3306
db-testing:
image: mysql:5.7
volumes:
- ./docker/mysql/my.cnf:/etc/mysql/conf.d/my.cnf
tmpfs:
- /var/lib/mysql
- /var/log/mysql
environment:
- MYSQL_DATABASE=${DB_NAME}
- MYSQL_USER=${DB_USER}
- MYSQL_PASSWORD=${DB_PASS}
- MYSQL_ROOT_PASSWORD=${DB_PASS}
- TZ=${TZ}
ports:
- ${DB_TESTING_PORT}:3306
node:
image: node:12.13-alpine
tty: true
volumes:
- ${PROJECT_PATH}:/work
working_dir: /work
redis:
image: redis:5.0-alpine
volumes:
- redis-store:/data
mail:
image: mailhog/mailhog
ports:
- ${MAILHOG_PORT}:8025
volumes:
db-store:
redis-store:
When I execute "docker-compose build" in terminal, it's successfully done, but db container and db-testing container has status "EXIT: 1" or "EXIT: 2".
So, Could you teach me what's wrong.