[JENKINS-44234] tag a Image after pulling it from a private registry

If you pull a image from a private registry you can't tag it or run it. 

```

docker.withRegistry("https://docker.bla.de"){

r_image = docker.image("${docker_image_name}:${dev_image_tag}")

r_image.pull()

r_image.tag("current")

}

```

The example above doesn't work. I did a pull request to fix this behavior. 

---
Originally reported by schreibe72, imported from: tag a Image after pulling it from a private registry

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

Raw content of original issue

If you pull a image from a private registry you can't tag it or run it. 


```

docker.withRegistry("https://docker.bla.de"){

 r_image = docker.image("${docker_image_name}:${dev_image_tag}")

 r_image.pull()

 r_image.tag("current")

 }

```

The example above doesn't work. I did a pull request to fix this behavior. 

environment

```
Jenkins 2.59

Docker 1.17

Ubuntu 14.04
```