version: "3" services: postal: build: . image: postal container_name: postal environment: - POSTAL_HOSTNAME=idontknow.nowhere.com mysql: image: mariadb:10 container_name: postal_mysql environment: - MYSQL_ROOT_PASSWORD=changeme - MYSQL_DATABASE=postal rabbitmq: image: rabbitmq:3-alpine container_name: postal_rabbitmq environment: - RABBITMQ_DEFAULT_USER=postal - RABBITMQ_DEFAULT_PASS=changeme - RABBITMQ_DEFAULT_VHOST=postal