More and more CI tests failing with "Cannot connect to the Docker daemon"

In the Buildroot project, we are using Gitlab CI on gitlab.com to test Buildroot. Since a few weeks, we are seeing more and more random failures, where the test fails with "ERROR: Job failed (system failure): Cannot connect to the Docker daemon at tcp://165.227.82.17:2376. Is the docker daemon running?"

It never happens on the same jobs, and the jobs we are doing used to be stable a few weeks back.

Examples: https://gitlab.com/buildroot.org/buildroot/pipelines/13960893/failures https://gitlab.com/buildroot.org/buildroot/-/jobs/40002242

etc. Having random failures in CI jobs is of course not really nice, as it creates some noise in the CI results :-/

Is there anything that can be done about it? Thanks!