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Docker for Web Developers

Launch a Development Environment with Docker Compose

Learn how to launch your app with Docker Compose.

We'll cover the following...

Docker Compose

Docker Compose can override the image’s default production settings to launch a container in development mode. We will use the following docker-compose.yml:

version: '3'
services:
  nodehello:
    environment:
      - NODE_ENV=development
    build:
      context: ./
      dockerfile: Dockerfile
    container_name: nodehello
    volumes:
      - ./:/home/node/app
    ports:
      - "3000:3000"
      - "9229:9229"
    command: /bin/sh -c 'npm install && npm run debug'

Before we referenced a specific image: from Docker Hub. In this file, a build: option is used to create an image from a Dockerfile:

  • The context: is the relative path to the location of your
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