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Here's my problem: I want to build a chroot environment inside a docker container. The problem is that debootstrap cannot run, because it cannot mount proc in the chroot:
W: Failure trying to run: chroot /var/chroot mount -t proc proc /proc
(in the log the problem turns out to be: mount: permission denied)
If I run --privileged the container, it (of course) works... I'd really really really like to debootstrap the chroot in the Dockerfile (much much cleaner). Is there a way I can get it to work?
Thanks a lot!
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Once you have your Docker container up and running, you can work with the environment of the Docker container in the same way you would do with an Ubuntu machine. You can access the bash or shell of the container and execute commands inside it and play around with the file system.
To install packages in a docker container, the packages should be defined in the Dockerfile. If you want to install packages in the Container, use the RUN statement followed by exact download command . You can update the Dockerfile with latest list of packages at anytime and build again to create new image out of it.
To detach from a running container, use ^P^Q (hold Ctrl , press P , press Q , release Ctrl ).
The --rm causes Docker to automatically remove the container when it exits. The image being used to create the container is generally specified as <name>:<tag> such as ruby:latest . If the specified image is not available locally, Docker will attempt to retrieve it from Docker Hub (or any connected Docker registry).
You could use the fakechroot variant of debootstrap, like this:
fakechroot fakeroot debootstrap --variant=fakechroot ... Cheers!
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