[JENKINS-38766] withRegistry() duplicates registry name

If you have a docker image with a registry already specified, and then try to push it to a different registry in a withRegistry() block, the plugin prepends the new registry in front of the old one, rather than replacing the old registry.

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Originally reported by llamahunter, imported from: withRegistry() duplicates registry name

• status: Open
  
• priority: Major
  
• component(s): docker-workflow-plugin
  
• resolution: Unresolved
  
• votes: 0
  
• watchers: 1
  
• imported: 2025-12-07
  

Raw content of original issue

If you have a docker image with a registry already specified, and then try to push it to a different registry in a withRegistry() block, the plugin prepends the new registry in front of the old one, rather than replacing the old registry.