use the ENTRYPOINT defined in the docker image if any

Now that users can push their image to the registry, it is much more
straightforward to let them configure the app entrypoint with an
ENTRYPOINT directive in the Dockerfile.

Note: if the image has no entrypoint, then we fall back to the global
entrypoint defined in the webapp (Webapp.entrypoint)
3 jobs for image-entrypoint in 1 second (queued for 3 seconds)
latest
Status Job ID Name Coverage
  Build
failed #624546
allgo
bootstrap

00:00:01

 
  Test
skipped #624547
allowed to fail
django_pylint
 
  Cleanning
failed #624548
nettoyage

00:00:00

 
Name Stage Failure
failed
nettoyage Cleanning
Running with gitlab-runner 12.7.1 (003fe500)
on gitlab-runner for allgo project. GsVG3gec
Using Shell executor...
Running on gitlabrunner...
bash: line 15: echo: write error: No space left on device
bash: line 15: echo: write error: No space left on device
ERROR: Job failed: exit status 1
failed
bootstrap Build
Running with gitlab-runner 12.7.1 (003fe500)
on gitlab-runner for allgo project. GsVG3gec
Using Shell executor...
Running on gitlabrunner...
bash: line 15: echo: write error: No space left on device
bash: line 15: echo: write error: No space left on device
ERROR: Job failed: exit status 1