MySQL Docker Image is always restarting status - php

Question

I followed step by step this article ( https://www.digitalocean.com/community/tutorials/how-to-set-up-laravel-nginx-and-mysql-with-docker-compose-on-ubuntu-20-04 ).
I just changed php version (8.1) instead of (7.4) and mysql version (8.0) instead of (5.7.22)
When I run (docker ps) command, digitalocean.com/php and nginx:alpine are fine. But mysql:8.0 is always restarting status.
But I tested firstly it in local development.
When local development, everything is okay.
Buy I deployed it in the droplet, I faced the error that MySQL is always restarting status.
When I run (docker logs -f ) command, I faced the following error.
2022-08-13 06:35:20+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 8.0.30-1.el8 started.
2022-08-13 06:35:20+00:00 [Note] [Entrypoint]: Switching to dedicated user ‘mysql’
2022-08-13 06:35:20+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 8.0.30-1.el8 started.
‘/var/lib/mysql/mysql.sock’ -> ‘/var/run/mysqld/mysqld.sock’
When I run (docker run --restart=always mysql:8.0) command, I faced the following error.
2022-08-13 06:57:37+00:00 [Note] [Entrypoint]: Entrypoint script - for MySQL Server 8.0.30-1.el8 started.
2022-08-13 06:57:38+00:00 [Note] [Entrypoint]: Switching to dedicated user ‘mysql’ 2022-08-13 06:57:38+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 8.0.30-1.el8 started.
2022-08-13 06:57:38+00:00 [ERROR] [Entrypoint]: Database is uninitialized and password option is not specified
You need to specify one of the following:
MYSQL_ROOT_PASSWORD
MYSQL_ALLOW_EMPTY_PASSWORD
MYSQL_RANDOM_ROOT_PASSWORD
Dockerfile
FROM php:8.1-fpm
# Copy composer.lock and composer.json
COPY composer.lock composer.json /var/www/
# Set working directory
WORKDIR /var/www
# Install dependencies
RUN apt-get update && apt-get install -y \
build-essential \
libpng-dev \
libjpeg62-turbo-dev \
libfreetype6-dev \
locales \
zip \
jpegoptim optipng pngquant gifsicle \
vim \
unzip \
git \
curl \
libzip-dev
# Clear cache
RUN apt-get clean && rm -rf /var/lib/apt/lists/*
# Install composer
RUN curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer
# Add user for laravel application
RUN groupadd -g 1000 www
RUN useradd -u 1000 -ms /bin/bash -g www www
# Copy existing application directory contents
COPY . /var/www
# Copy existing application directory permissions
COPY --chown=www:www . /var/www
# Change current user to www
USER www
# Expose port 9000 and start php-fpm server
EXPOSE 9000
CMD ["php-fpm"]
docker-compose.yml
version: '3'
services:
#PHP Service
app:
build:
context: .
dockerfile: Dockerfile
image: digitalocean.com/php
container_name: app
restart: unless-stopped
tty: true
environment:
SERVICE_NAME: app
SERVICE_TAGS: dev
working_dir: /var/www
volumes:
- ./:/var/www
- ./php/local.ini:/usr/local/etc/php/conf.d/local.ini
networks:
- app-network
#Nginx Service
webserver:
image: nginx:alpine
container_name: webserver
restart: unless-stopped
tty: true
ports:
- "80:80"
- "443:443"
volumes:
- ./:/var/www
- ./nginx/conf.d/:/etc/nginx/conf.d/
networks:
- app-network
#MySQL Service
db:
image: mysql:8.0
container_name: db
restart: unless-stopped
tty: true
ports:
- "3306:3306"
environment:
MYSQL_DATABASE: laravel
MYSQL_ROOT_PASSWORD: 123123
SERVICE_TAGS: dev
SERVICE_NAME: mysql
volumes:
- dbdata:/var/lib/mysql/
- ./mysql/my.cnf:/etc/mysql/my.cnf
networks:
- app-network
#Docker Networks
networks:
app-network:
driver: bridge
#Volumes
volumes:
dbdata:
driver: local