Tests failing on Ubuntu 20.04 (ubuntu:focal) image

[sliekens]

Hello,

As of recently, I can no longer get devcontainer features test to work. I pinpointed the issue to an error with docker exec <image> when the image is based on ubuntu:focal (20.04).

This happens both on my machine and in GitHub Codespaces so I'm pretty sure it is not just an issue on my machine, as it has worked for me in the past (not more than a month ago).

As for what actually broke it, I am clueless.

In essence, the problem on ubuntu:focal is this:

Errors alternate between:

1. OCI runtime exec failed: exec failed: unable to start container process: procReady not received: unknown
2. OCI runtime exec failed: exec failed: unable to start container process: error writing config to pipe: write init-p: broken pipe: unknown

Weirdly, I can't get it to work on ubuntu:noble either (24.04), but it works fine on ubuntu:jammy (22.04):

[Mathiyarasy]

Hello @sliekens
Thank you for bringing up this issue. I was able to reproduce the problem, and it appears to stem from the docker-in-docker feature. When configuring your Codespace with the docker-in-docker feature and setting moby to false, the issue seems to be resolved.

I'm continuing to investigate the underlying cause when using moby