docker -compose file mysql 5.7 code example

Example: mysql docker compose

version: 'X.X'
	services:  
    	db:    
        	image: mysql
            restart: always    
            environment:      
            	MYSQL_DATABASE: 'db' # So you don't have to use root, but you can if you like      
                MYSQL_USER: 'user' # You can use whatever password you like      
                MYSQL_PASSWORD: 'password' # Password for root access      
                MYSQL_ROOT_PASSWORD: 'password'    
           	ports: # <Port exposed> : < MySQL Port running inside container>      
             - '3306:3306'    
           	expose: # Opens port 3306 on the container      
             - '3306' # Where our data will be persisted    
           	volumes:      
             - my-db:/var/lib/mysql # Names our volume
           		volumes:  
           		y-db: