Docker Node image generates files with wrong user permissions - docker

Question

Problem
I'm using docker to generate my npm files. The problem is I get permissions issues when I do this. I have been using second alpine image to fix the permission issues. I want to speed up the process by generating the files with the correct permissions.
Attempt 1
Using the node user seemed to work at first as it persisted the user permissions on my device. When I tried it on a different device I got this error which I could not solve. The /local directory is where I'm mounting my npm directory. I also tried adding the group to the node user and got the same error.
Code
docker run -u "node" --rm -v $PWD:/local node:19.3.0 bash -c "cd local/mobile && npm install --legacy-peer-deps && npx ionic build && npx ionic cap copy"
Output
npm ERR! path /local/mobile/node_modules
npm ERR! errno -13 npm ERR!
Error: EACCES: permission denied, mkdir '/local/mobile/node_modules'
npm ERR! [Error: EACCES: permission denied, mkdir
'/local/mobile/node_modules']
{ npm ERR! errno: -13,
npm ERR!
code: 'EACCES', npm ERR! syscall: 'mkdir',
npm ERR! path:
'/local/mobile/node_modules' npm ERR! }
Attempt 2
I also tried using my local id and group id to run the dockerfile. I got a different error when using this technique.
Code
docker run -u "$(id -u):$(id -g)" --rm -v $PWD:/local node:19.3.0 bash -c "cd local/mobile && npm install --legacy-peer-deps && npx ionic build && npx ionic cap copy"
Output
npm ERR! code EACCES
npm ERR! syscall mkdir
npm ERR! path /.npm npm
ERR! errno -13

Answer 1

You can try specifying the user node. By default, the user "node" haven not have written permission the host machine
You try the following method
docker run --rm -v $PWD:/local node:19.3.0 bash -c "cd local/mobile && npm install --legacy-peer-deps && npx ionic build && npx ionic cap copy"