Auto DevOps performance docker image not compatible with gitlab-runner

I was fixing an ~"auto devops" regression when I got stuck by this failure: https://gitlab.com/nolith/minimal-ruby-app/-/jobs/46578146

Still not working even after changing entrypoint to ["/bin/bash", "-c"] https://gitlab.com/nolith/minimal-ruby-app/-/jobs/46582404

The problem is described here gitlab-runner!309 (comment 52151622); tl;dr in sitespeedio/sitespeed.io:6.0.3 /bin/sh it's a link to /bin/dash which do not support set -o pipefail.

@joshlambert how do you tested gitlab-ci-yml!121 (merged)?

/cc @bikebilly @ayufan