GitLab

I get the following error with more than one branch:

  error: pathspec '  librem5
  pureos/sloppy' did not match any file(s) known to git

To fix this, we grep for the current branch marker in the branch list.

I get an error on Debian buster:

  git: 'switch' is not a git command. See 'git --help'.

The version of git in buster is 2.20.1 but "git switch" was introduced
in 2.23.

The call is superfluous anyway because the branch is switched on exit
using "git checkout" in the cleanup() function.  Hence, to fix this
issue we just remove the "git switch" call.

.gitlab-ci.yml: Fix usage of eatmydata

See merge request Librem5/librem5-dev-tools!2

We need to install eatmydata before making use of it.