Hands-On Continuous Integration and Delivery

Containerized environments

Tools such as Docker and Kubernetes have risen in popularity because of their ability to isolate environment-level information and to create reproducible/repeatable environments. Using Docker, you can declare all of your external services, such as Redis and MongoDB. 

Here is an example of docker-compose YML script for the API workshop repo (https://github.com/jbelmont/api-workshop):

version: '3'
services:
  mongo:
    image: mongo:3.4.5
    command: --smallfiles --quiet --logpath=/dev/null --dbpath=/data/db
    ports:
      - "27017:27017"
    volumes:
      - data:/data/db
  redis:
    image: redis:3.2-alpine
    ports:
      - "6379:6379"
 apid:
    build:      context: .      dockerfile: Dockerfile-go    depends_on:      - mongo      - redis    env_file:      - ./common.env    links: - mongo ...