version: '2.3'

services:

postgresql:

image: postgres:9.5.12

environment:

POSTGRES_PASSWORD: ""

ports:

- "5432:5432"

healthcheck:

test: pg_isready -U postgres

start_period: 10s

interval: 10s

timeout: 30s

retries: 3

mysql:

image: mysql:5.7

environment:

MYSQL_ALLOW_EMPTY_PASSWORD: "yes"

ports:

- "3306:3306"

healthcheck:

test: mysqladmin -h 127.0.0.1 -uroot ping

start_period: 15s

interval: 10s

timeout: 30s

retries: 3

healthcheck:

image: busybox

depends_on:

postgresql:

condition: service_healthy

mysql:

condition: service_healthy