react-starter-template/docker-compose.yaml at master · ceoro9/react-starter-template · GitHub

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version: '3.1'

services:
  ui-admin-panel:
    container_name: ui-admin-panel-instance
    build: .
    environment:
      - NODE_ENV=development
      - UI_ADMIN_PANEL_DEV_SERVER_PORT=9000
    ports:
      - "9000:9000"
    volumes:
      - .:/usr/src/app/:rw

    # If node_modules/ does not exist in the current directory
    # of host machine, we copy pre-install(during docker build)
    # node_modules/ folder from the container to the current directory
    # of the host machine.
    # ****************************************************************
    # BEFORE YOU RUN this file for the first time, make sure you remove
    # node_modules/ folder on your host machine, othervise the machine
    # dependent node_modules/ folder will be mounted to the
    # container, so in that case there will be no point of using
    # docker containers for shipping re-usable software.
    # ****************************************************************
    command: >
      sh -c '
        if test -d node_modules; \
        then \
          echo node_modules_exists; \
        else \
          cp -a /tmp/node_modules /usr/src/app; \
        fi && \
          npm install && \
          dumb-init npm start'