Docker build does not install packages in `node_modules` volumes

What causes yarn/npm install from not installing any packages in a volume?

I have a Dockerfile that has the instruction to RUN yarn install (tested with both NPM and YARN), but the packages node_modules directory inside the container is empty. If I exec -it service_name bash and run the install command manually, it installs the packages correctly.
I’ve noticed this after a refactor, where I had a Worker service that did the process of installation and a second that ran the development server. Decided to keep all in the same Docker-compose declaration instead but since the issue start happening, it persists. Tried a full reset etc without success (down, rm containers, prune, etc).

The Service in question declared in the Docker-compose file:

      context: .
      dockerfile: ./.docker/dockerFiles/node.yml
    image: foobar/node_dev:latest
    container_name: node_dev
    working_dir: /home/node/app
     - 8000:8000
     - 9000:9000
      - NODE_ENV=development
      - ./foobar-blog-ui/:/home/node/app
      - ui_node_modules:/home/node/app/node_modules
      - ui_gatsbycli_node_module:/usr/local/lib/node_modules/gatsby-cli
      - ./.docker/scripts/
    command: /bin/bash -c '/home/node/ wordpress-reverse-proxy:80 -t 10 -- yarn start'
      - mysql
      - wordpress
      - foobar-wordpress-network

The related Volumes references in the service:


Finally, the Dockerfile that generates the image:

FROM node:8.16.0-slim

ARG NODE_ENV=development

WORKDIR /home/node/app

RUN apt-get update
RUN apt-get install -y rsync vim git libpng-dev libjpeg-dev libxi6 build-essential libgl1-mesa-glx

RUN yarn global add gatsby-cli
RUN yarn install

Also, tried to yarn install --force --no-lockfile and made sure that it was tested without any package or yarn lock files present in the project root, and vice-versa.

I’m finding this quite odd and definitely a typo somewhere but I haven’t been able to spot yet.

The host system is macOS Mojave.

I’d like to mention that if exec -it service_name bash and execute the NPM/YARN install the node_modules is populated with the packages.
Before most tests I did, I’ve also tried to reset by:

docker-compose stop
docker-compose rm -f
docker volume prune -f
docker network prune -f

And now tested with:

docker stop $(docker ps -a -q)
docker rm $(docker ps -a -q)
docker volume prune -f
docker volume rm $(docker volume ls -qf dangling=true)
docker network prune -f
docker system prune --all --force --volumes
rm -rf ./.docker/certs/ ./.docker/certs-data/ ./.docker/logs/nginx/ ./.docker/mysql/data

The logs for the particular image:

Building node_dev
Step 1/8 : FROM node:8.16.0-slim
8.16.0-slim: Pulling from library/node
9fc222b64b0a: Pull complete
7d73b1e8f94b: Pull complete
1059045652d5: Pull complete
08cd60b80e4e: Pull complete
b7d875c65da4: Pull complete
Digest: sha256:0ec7ac448d11fa1d162fb6fd503ec83747c80dcf74bdf937b507b189b610756a
Status: Downloaded newer image for node:8.16.0-slim
 ---> 67857c9b26e1
Step 2/8 : ARG NODE_ENV=development
 ---> Running in da99a137d733
Removing intermediate container da99a137d733
 ---> 0f9b718d3f66
Step 3/8 : ARG NPM_TOKEN=3ea44a41-9293-4569-a235-a622ae216d60
 ---> Running in e339a4939029
Removing intermediate container e339a4939029
 ---> e47b42008bc3
 ---> Running in fdc09147e9da
Removing intermediate container fdc09147e9da
 ---> 3b28ab5539d3
Step 5/8 : WORKDIR /home/node/app
 ---> Running in 44eef1d9293d
Removing intermediate container 44eef1d9293d
 ---> 2d07ecf3de2e
Step 6/8 : RUN echo "//$NPM_TOKEN" > .npmrc
 ---> Running in a47d5e22839b
Removing intermediate container a47d5e22839b
 ---> bd9f896846b7
Step 7/8 : RUN yarn global add gatsby-cli
 ---> Running in ca3e74d12df4
yarn global v1.15.2
[1/4] Resolving packages...
[2/4] Fetching packages...
[3/4] Linking dependencies...
[4/4] Building fresh packages...
success Installed "[email protected]" with binaries:
      - gatsby
Done in 15.51s.
Removing intermediate container ca3e74d12df4
 ---> bc8d15985ad0
Step 8/8 : RUN yarn install --force --no-lockfile
 ---> Running in 3f0e35e5487b
yarn install v1.15.2
[1/4] Resolving packages...
[2/4] Fetching packages...
[3/4] Linking dependencies...
[4/4] Rebuilding all packages...
Done in 0.04s.
Removing intermediate container 3f0e35e5487b
 ---> 485b9e9bccba
Successfully built 485b9e9bccba
Successfully tagged moola/node_dev:latest

Changed the Service command to sleep 300s and exect -it and ls -la the /home/node/app/node_modules to find:


And when cat .yarn-integrity I see:

  "systemParams": "linux-x64-57",
  "modulesFolders": [],
  "flags": [],
  "linkedModules": [],
  "topLevelPatterns": [],
  "lockfileEntries": {},
  "files": [],
  "artifacts": {}

Source: StackOverflow