Example to wait for postgres container before start another container using docker-compose.yml

gistfile1.txt

# Credits to: https://github.com/peter-evans
# Extracted from: https://github.com/peter-evans/docker-compose-healthcheck/blob/master/docker-compose.yml
# TL;DR;

version: "2.2"

services:
  foo:
      image: an_image:tag
      networks:
        - mean
      depends_on:
        postgres:
          condition: service_healthy

    postgres:
        image: postgres:10.1
        mem_limit: 1500m
        environment:
            - POSTGRES_PASSWORD=apass
            - POSTGRES_USER=auser
            - POSTGRES_DB=adb
        networks:
            - mean
        healthcheck:
            test: ["CMD-SHELL", "pg_isready -U postgres"]
            interval: 20s
            timeout: 5s
            retries: 1