Docker: npm run start causing error, EACCES: permission denied, open '/home/node/node_modules/.cache/.eslintcache

Question

I have created a react app and trying to run it over the docker container with volumes (mapping content inside the container with outside files), everything was working fine earlier but now facing an issue as shared. Can anyone help me with that? This is a permission issue but doesn't know how to resolve that. root user has access of node_modules folder. How to give access to node user ?

My docker file

FROM node:alpine

USER node
WORKDIR '/home/node'

COPY package.json .
RUN npm install

COPY . .

CMD ["npm", "run", "start"]

Commands used:

docker build -t frontend -f Dockerfile.dev .

docker run -p 3000:3000 -v /home/node/node_modules -v $(pwd):/home/node frontend:latest

Error:

Access in container:

~ $ ls -l
total 1488
-rw-rw-r--    1 node     node           124 Jun 20 08:37 Dockerfile.dev
-rw-rw-r--    1 node     node          3369 Jun 17 18:25 README.md
drwxr-xr-x    3 node     node          4096 Jun 17 18:45 build
-rw-rw-r--    1 node     node           230 Jun 20 06:56 docker-compose.yml
drwxrwxr-x 1041 root     root         36864 Jun 20 19:15 node_modules
-rw-rw-r--    1 node     node       1457680 Jun 18 18:28 package-lock.json
-rw-rw-r--    1 node     node           811 Jun 17 18:26 package.json
drwxrwxr-x    2 node     node          4096 Jun 17 18:25 public
drwxrwxr-x    2 node     node          4096 Jun 17 18:25 src

Answer 1

This file is not a very important file that can cause major application failures if removed. its just a cache file created by external dependencies using eslinter. You can just safely remove by running

sudo rm /home/$USER/path-to-your-project/node_modules/.cache/.eslintcache 

Answer 2

Create a .eslintignore file and put * in it.

Answer 3

if you'r running docker-compose, changing the Dockerfile when npm installing worked for me after a lot of investigation

RUN cd /usr/src/app && npm install