Use private docker registry with Authentication in Jenkinsfile
As specified in Using a custom registry, you can specify the credentials and registry url to use as such:
docker.withRegistry('https://registry.az1', 'credentials-id') { ...}You need to create a Jenkins credentials object which will contain the credentials for the repository and give it a name to replace credentials-id above.
Update:
For declarative pipelines, the syntax is as such:
agent { docker { image 'registry.az1:5043/maven-proto' registryUrl 'https://registry.az1' registryCredentialsId 'credentials-id' args '-v /var/jenkins_home/.m2:/root/.m2' }}