Jenkins pipeline with GitLab

Using Jenkins
1

I want to merge a branch with the controller (m a s t e r) branch. How do I build a pipeline to perform this operation automatically? I want to manually run this job whenever needed. I don’t need any webhook trigger.

2

I connect Jenkins using a SSH key. I created a pipeline.
Checkout the branch ‘my-branch’
git checkout controller
git merge my-branch
git push origin controller

It throws “not something we can merge”. What is the issue here?

3

This could be because the branch does not exist, or because it is not fetched in your local repository. Here is an untested example with the steps to create a Jenkins pipeline to merge a branch with the controller branch:

  1. First, ensure that the branch my-branch exists and is available in your local repository. You can fetch the branch using the command git fetch origin my-branch.
  2. Create a new Jenkins Pipeline job.
  3. In the Pipeline section of the job configuration, choose “Pipeline script” and enter the following script:
pipeline {
    agent any

    stages {
        stage('Merge branch') {
            steps {
                script {
                    // Checkout the controller branch
                    git branch: 'controller', credentialsId: 'your-credentials-id', url: 'your-repo-url'

                    // Merge the 'my-branch' into the 'controller' branch
                    sh 'git merge origin/my-branch'

                    // Push the changes to the remote repository
                    sh 'git push origin controller'
                }
            }
        }
    }
}

This pipeline checks out the controller branch, merges the my-branch into it, and then pushes the changes to the remote repository.