two ways of dockerizing a Spring Boot app with MySQL database. Those are;

By creating a docker network

Using docker-compose

version: "3"

services:

server:

image: backend

ports:

- "8080:8080"

environment:

- spring.datasource.url=jdbc:mysql://mysqldb:3306/employeedb?useSSL=false

networks:

- springmysql-net

depends_on:

- mysqldb

mysqldb:

image: mysql:5.7

networks:

- springmysql-net

environment:

- MYSQL_ROOT_PASSWORD=1234

- MYSQL_DATABASE=employeedb

- MYSQL_USER=sa

- MYSQL_PASSWORD=1234

networks:

springmysql-net: