How to attach Cdrom to docker container

burgas · 11-16-2020, 05:15 AM

I have mounted CDROM to my docker host
# sudo mount /dev/cdrom /media/cdrom

then create volume
# sudo docker volume create --name cdrom

and now I want to start container with my cdrom
# sudo docker run -it centos cdrom:/media/cdrom

but receive
docker: Error response from daemon: OCI runtime create failed: container_linux.go:345: starting container process caused “exec: “cdrom:/media/cdrom”: stat cdrom:/media/cdrom: no such file or directory”: unknown.

What I doing wrong? Thanks.

berndbausch · 11-16-2020, 05:45 AM

Your docker run invocation creates a container based on image centos, and launches a command named cdrom:/media/cdrom in that container. This fails, since there is no command with this name.

To map /media/cdrom into the container, you can use -v /media/cdrom:MOUNTPOINT:ro, where MOUNTPOINT is the directory in the container. Not sure if the ro flag is required. See https://docs.docker.com/storage/bind-mounts/.

John07 · 08-09-2021, 06:38 AM

think this should work:

sudo docker run -v /media/cdrom:/media/cdrom -it centos
But maybe you need:

sudo docker run --device /dev/cdrom -it centos
You definitively don’t need a named volume (volume create)

John07 · 09-08-2021, 02:33 AM

Quote:

Originally Posted by John07

think this should work:

sudo docker run -v /media/cdrom:/media/cdrom -it centos
But maybe you need:

sudo docker run --device /dev/cdrom -it centos
You definitively don’t need a named volume (volume create)

Can somebody confirm if my answer is correct or not?

computersavvy · 09-08-2021, 10:27 AM

Quote:

Originally Posted by John07

Can somebody confirm if my answer is correct or not?

Can you try it?

If you are not reasonably certain it is correct then it should not be posed as a solution.

I don't use docker so I have no idea.