Update Dockerfile

1 job for master in 8 minutes and 19 seconds
Status Job ID Name Coverage
  Build And Push
failed #12907
build-and-push-job

00:08:19

 
Name Stage Failure
failed
build-and-push-job Build And Push
  pip install [options] <requirement specifier> [package-index-options] ...
pip install [options] -r <requirements file> [package-index-options] ...
pip install [options] [-e] <vcs project url> ...
pip install [options] [-e] <local project path> ...
pip install [options] <archive url/path> ...

no such option: --update
error building image: error building stage: failed to execute command: waiting for process to exit: exit status 2
ERROR: Job failed: command terminated with exit code 1