apt-get install was probing for a Dialog then Readline debconf frontend
before falling back to Teletype on the non-interactive CI runner,
adding noise and failed-negotiation log lines to every run. Passing
DEBIAN_FRONTEND=noninteractive directly on the sudo command line (env
vars set via step-level `env:` don't survive sudo's env_reset) skips
the negotiation and goes straight to the frontend that actually works
here.
rootiest
f7598e5e23