Question 83887 in Docker Question posted in
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How to fix docker error "readonly file system: unknown"?

I was treing to set the project on my local machine as readonly for the docker container, like this:

docker run -d 
    -p 3000:3000 
    -v $PWD:/app:ro 
    -v /app/node_modules 
    --name $1 
    $(docker images | awk '{print $1}' | awk 'NR==2')

and I always get this error, only after I add the :ro bit as the optional parameter to the volume:

docker: Error response from daemon: failed to create shim: OCI runtime create failed: container_linux.go:380: starting container process caused: process_linux.go:545: container init caused: rootfs_linux.go:75: mounting "/var/lib/docker/volumes/6ffd471c1bc7edc141b6569b4d8e16829c7c7ae1838e4cc924727b0a854de143/_data" to rootfs at "/app/node_modules" caused: mkdir /var/lib/docker/overlay2/60b790308084302171b1b339ee242862651d7d96ecf21fb9b0a8867326ca83b3/merged/app/node_modules: read-only file system: unknown.

I was following this tutorial and I am using docker-desktop and WSL2 on windows 11.

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2

Answers


  1. 0

    In my case, i’ve solved this creating a container with –privileged parameter.

    to do:

    docker run --privileged -i --name master --hostname k8s-master -d ubuntu:20.04

    now, its fine.

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  2. 0

    Actually the :ro is causing issue here on building the container on first time you must have the node_modules folder locally after that you can delete it

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