Merge 'Display git-hash when building via nix-build'

See merge request card10/firmware!320
3 jobs for master in 2 minutes and 5 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #7707
build

00:01:13

 
  Deploy
passed #7708
pages

00:00:52

passed pages:deploy

00:00:01