Configured maven-javadoc-plugin. Added source to the configuration.

3 jobs for master in 4 minutes and 20 seconds
Status Job ID Name Coverage
  Build
passed #647167
build

00:00:43

 
  Test
passed #647168
test

00:00:44

 
  Deploy
failed #647169
deploy

00:02:51

 
Name Stage Failure
failed
deploy Deploy
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-gpg-plugin:1.5:sign (sign-artifacts) on project assert-object-equals-module: Exit code: 2 -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
WARNING: DEPRECATION: With gitlab-runner 12.0 we will change some tools inside the helper image, please make sure your image is compliant with the new API. https://gitlab.com/gitlab-org/gitlab-runner/issues/4013
ERROR: Job failed: exit code 1