Fix 'publish docker' stage in Jenkinsfile

[egvimo]

Updating the CI-CD generator Jenkinsfile.

• This fixes the node install bug for Gradle
• use prod builds
• and use the same commands described in the docs.

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• All continuous integration tests are green
• Tests are added where necessary
• jhipster-online was updated if necessary
• Documentation is added/updated where necessary
• Coding Rules & Commit Guidelines as per our CONTRIBUTING.md document are followed

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[mshima]

We have #13531 open to decide which command to use for docker.
It should be used here too.

[egvimo]

We have #13531 open to decide which command to use for docker.
It should be used here too.

Done.

[egvimo]

We have #13531 open to decide which command to use for docker.
It should be used here too.

@mshima The discussion is now closed, but I don't quite know what the outcome is. Should I use compile and update the PR?

[mshima]

@egvimo I think the correct was to use package or compile, but since the PR is not merged and the documentation still uses verify, you should use verify for now.

You will probably need to updated test snapshots for tests to pass.

[egvimo]

@mshima I have updated the command and the tests.

[mshima]

LGTM

[mshima]

@pascalgrimaud are you already doing do release?

[pascalgrimaud]

Everything is ready on my computer but I'll do it this afternoon.
So this one can be merged, as it looks safe