Install node_modules inside Docker container and synchronize them with host

Question

I have the problem with installing node_modules inside the Docker container and synchronize them with the host. My Docker\'s version is 18.03.1-ce, build

Answer 1

Having run into this issue and finding the accepted answer pretty slow to copy all node_modules to the host in every container run, I managed to solve it by installing the dependencies in the container, mirror the host volume, and skip installing again if a node_modules folder is present:

Dockerfile:

FROM node:12-alpine

WORKDIR /usr/src/app

CMD [ -d "node_modules" ] && npm run start || npm ci && npm run start

docker-compose.yml:

version: '3.8'

services:
  service-1:
    build: ./
    volumes:
      - ./:/usr/src/app

When you need to reinstall the dependencies just delete node_modules.