docker-compose.yml

version: '3.4'

services:
  web:
    build:
      context: .
      args:
        BUILD_ENV: "development"
    command: [sh, -c, "yarn start"]
    env_file:
      - ./.env
    environment:
      REACTION_APP_NAME: "reaction-docs.web"
    ports:
      - 4242:4242
      - 35729:35729
    volumes:
      - $HOME/.cache/yarn-offline-mirror:/home/node/.cache/yarn-offline-mirror
      - web-yarn:/home/node/.cache/yarn
      - .:/usr/local/src/reaction-app # link everything from the root folder on the host machine into the container
      - empty_node_modules:/usr/local/src/reaction-app/node_modules # except do not link the host node_modules in because it will override the container node_modules
      - node_modules:/usr/local/src/node_modules # persist the node_modules that is used, which is up one folder level in the container

volumes:
  web-yarn:
  empty_node_modules:
  node_modules: