Merge branch 'with-pip' into 'master'

Use pip installed linkchecker

See merge request !1
2 jobs for master in 2 minutes and 12 seconds (queued for 1 second)
latest
Status Job ID Name Coverage
  Test
passed #90075
docker-machine
check_links_mardata_de

00:00:31

failed #90076
docker-machine allowed to fail
check_links_mardata_de_more_strict

00:01:40

 
Name Stage Failure
failed
check_links_mardata_de_more_strict Test
Statistics:
Downloaded: 381.77KB.
Content types: 119 image, 110 text, 0 video, 0 audio, 11 application, 0 mail and 1 other.
URL lengths: min=19, max=237, avg=87.

That's it. 241 links in 294 URLs checked. 0 warnings found. 2 errors found.
Stopped checking at 2021-01-19 04:21:42+000 (1 minute, 28 seconds)
Cleaning up file based variables
ERROR: Job failed: exit code 1