docker network create my_net

docker build infrast/spring_app:v1 .

(src/main/resources/database/Dockerfile)

docker build infrast/pg:v1 .

docker run -it -d -p 5432:5432 --name postgres --network my_net infrast/pg:v1

docker run -it -d -p 8080:8080 --name app --network my_net infrast/spring_app:v3

or

docker-compose up