Build systems that simply bail on the first thing they can't find are bad,...

Build systems that simply bail on the first thing they can't find are bad, therefore Bundler is bad.
jekyll-readme-index is also required.

Ref T10736
Status Job ID Name Coverage
  Build
manual #4583
docker allowed to fail manual
kdeorg/appimage-base
manual #4584
docker allowed to fail manual
kdeorg/staticweb