Updating Nextcloud dockerfile

4 jobs for Cloudcet_15.0 in 30 seconds (queued for 2 seconds)
Name Stage Failure
failed
build Build
See 'docker build --help'.

Usage: docker build [OPTIONS] PATH | URL | -

Build an image from a Dockerfile
Running after script...
$ docker logout $REGISTRY
Removing login credentials for registry.test.picasoft.net
ERROR: Job failed: exit code 1