docker-library
RISC-V support
Hi, I use Docker-in-Docker image to build Docker images in GitLab CI. With the soon introduction of RISC-V native runners (with Cloud-V: https://cloud-v.co/gitlab-riscv-runner) I would like to build the RISC-V images on the native hardware but there seems to be no official variant for linux/riscv64 platform in the latest tag.
What would need to happen to introduce an official RISC-V support for DinD image? Alpine already has official base image builds, so it should be no problem to enable the platform in the build matrix, right?
We get our builds of Docker from https://download.docker.com/linux/static/stable/, which unfortunately doesn't currently include riscv64.
Thank you for pointing me there. Are you aware of any efforts in bringing official RISC-V support upstream?
If you're interested in an alternative, I've built unofficial images at harbor.nirvati.org/library/docker:28-cli and harbor.nirvati.org/library/docker:28-dind.
https://gitlab.com/nirvati/risc-v/utils/docker-risc-v-builds https://gitlab.com/nirvati/risc-v/utils/docker
It's a slightly patched of dockerd and docker-cli, so it's not official.
Thanks for the pointer @AaronDewes. Are you planning to upstream your work any time soon? To be honest, I would prefer to stick to the official images.
I can't really upstream most of it because I'm mostly just recompiling dockerd. I have two patches for rootlesskit, I can have a look at the possibility of upstreaming these, but the main issue is Docker not having official builds.
In essence, I forked the older version of mirage-entropy vpnkit uses and added this patch: https://gitlab.com/nirvati/risc-v/mirage-entropy/-/commit/78f90076fa2d73efa47b06290e39656915b07090
But because it's an outdated/unmaintained version, I can't submit it directly as-is.
I think https://github.com/moby/moby/issues/44319#issuecomment-1690437603 and/or https://github.com/docker/docker-ce-packaging/pull/1072 are the closest things I can find to an "upstream" tracker for riscv64 builds on download.docker.com.