Mount permission denied

[energy-sync]

I am new to Docker, but I tried to create a container on Docker for Windows and it gives this error when I run it:

2022-11-14 19:43:22 mount: permission denied (are you root?)
2022-11-14 19:43:22 cat ./qemu-binfmt-conf.sh | sh -s -- --path=/qus/bin

I tried running as administrator, and it gave the same result. I also tried setting it up on a Raspberry Pi 3, and the same thing happened (using root and sudo).

[jamesmortensen]

I get the same problem. I also see the same problem trying to use tonistiigi/binfmt:

$ sudo docker run --privileged --rm tonistiigi/binfmt --install all
error: operation not permitted
cannot mount binfmt_misc filesystem at /proc/sys/fs/binfmt_misc
main.run
        /src/cmd/binfmt/main.go:183
main.main
        /src/cmd/binfmt/main.go:170
runtime.main
        /usr/local/go/src/runtime/proc.go:250
runtime.goexit
        /usr/local/go/src/runtime/asm_amd64.s:1571

This is on a GitPod Ubuntu 20.04.5 amd64 instance. Same issue with and without sudo. I seem to recall this not being a problem on amd64 platforms, but now for some reason I'm not able to get it to work.

There's no problem on GitHub Codespaces though.

[umarcor]

Depending on the platform, it might not be possible to register binfmt formats. See the last item in https://dbhi.github.io/qus/development.html#roadmap. @jamesmortensen I believe that's what might be happening on GitPod, while it does work on GitHub Codespaces and GitHub Actions; they have different permissions settings in the machines/environments.

@energy-sync you should not need qus to run ARM containers on Windows, because since 2017 Docker for Windows comes with QEMU already preinstalled and interpreters registered. See https://dbhi.github.io/qus/related.html#linuxkit-binfmt-docker-binfmt. Which foreign architecture are you trying to register? Apart from that, are you using Hyper-V as a backend or WSL?