[JENKINS-31608] Better support of DockerHub credentials

Today, to define DockerHub credentials, you have to define an empty url in docker.withRegistry('', 'my-dockerhub-credentials').

It supports an empty string '' but not null.

It would be nice to also support null: docker.withRegistry(null, 'my-dockerhub-credentials') and maybe to add a method such as docker.withRegistryCredentials(credentials).

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Originally reported by cleclerc, imported from: Better support of DockerHub credentials

• assignee: jglick
  
• status: Open
  
• priority: Minor
  
• component(s): docker-workflow-plugin
  
• resolution: Unresolved
  
• votes: 0
  
• watchers: 2
  
• imported: 2025-12-07
  

Raw content of original issue

Today, to define DockerHub credentials, you have to define an empty url in docker.withRegistry('', 'my-dockerhub-credentials').


It supports an empty string '' but not null.


It would be nice to also support null: docker.withRegistry(null, 'my-dockerhub-credentials') and maybe to add a method such as  docker.withRegistryCredentials(credentials).