Add the following stage to your Jenkinsfile.

You may activate the File.io reporter or Email reporter to access detailed logs and fixed sources.

// Lint with MegaLinter: https://megalinter.io/
stage('MegaLinter') {
    agent {
        docker {
            image 'oxsecurity/megalinter:v9'
            args "-u root -e VALIDATE_ALL_CODEBASE=true -v ${WORKSPACE}:/tmp/lint --entrypoint=''"
            reuseNode true
        }
    }
    steps {
        sh '/entrypoint.sh'
    }
    post {
        always {
            archiveArtifacts allowEmptyArchive: true, artifacts: 'mega-linter.log,megalinter-reports/**/*', defaultExcludes: false, followSymlinks: false
        }
    }
}

CloudBees has a helpful tutorial about how to use MegaLinter with Jenkins!

PR Comment Reporting from Jenkins

When MegaLinter runs from a Jenkins Multibranch Pipeline, it can automatically post results as comments on pull requests / merge requests hosted on GitHub, GitLab, Azure DevOps, or Bitbucket.

MegaLinter auto-detects the git hosting platform by inspecting the GIT_URL environment variable (provided by Jenkins Git plugin). It then maps Jenkins environment variables (CHANGE_ID, GIT_COMMIT, BUILD_URL, etc.) to the native CI variables each comment reporter expects.

Requirements

• Jenkins Multibranch Pipeline with the appropriate Branch Source plugin (GitHub Branch Source, GitLab Branch Source, or Bitbucket Branch Source)
• The pipeline must be triggered by a pull request / merge request (so CHANGE_ID is set by Jenkins)
• An authentication token for the target platform, stored as a Jenkins credential

Platform Configuration

Platform	Required Token Variable	Notes
GitHub	GITHUB_TOKEN (or PAT)	Token needs repo scope (or issues:write + pull-requests:write for fine-grained tokens)
GitLab	GITLAB_ACCESS_TOKEN_MEGALINTER	Personal access token with api scope
Azure DevOps	SYSTEM_ACCESSTOKEN	Personal access token with Code (Read & Write) permission
Bitbucket	BITBUCKET_REPO_ACCESS_TOKEN	Repository access token with Pull-requests: Write scope

Jenkinsfile Example with GitHub PR Comments

// Lint with MegaLinter: https://megalinter.io/
stage('MegaLinter') {
    agent {
        docker {
            image 'oxsecurity/megalinter:v9'
            args "-u root -e VALIDATE_ALL_CODEBASE=true -v ${WORKSPACE}:/tmp/lint --entrypoint=''"
            reuseNode true
        }
    }
    environment {
        GITHUB_TOKEN = credentials('github-token')
    }
    steps {
        sh '/entrypoint.sh'
    }
    post {
        always {
            archiveArtifacts allowEmptyArchive: true, artifacts: 'mega-linter.log,megalinter-reports/**/*', defaultExcludes: false, followSymlinks: false
        }
    }
}

Self-hosted / On-premise Platforms

MegaLinter detects the platform by looking for keywords in the GIT_URL hostname (e.g., gitlab.mycompany.com is detected as GitLab, github.internal.corp.com as GitHub).

If your self-hosted instance uses a hostname without the platform name (e.g., git.mycompany.com), set the JENKINS_REPO_PLATFORM environment variable to explicitly tell MegaLinter which platform to use:

environment {
    JENKINS_REPO_PLATFORM = 'gitlab'  // or 'github', 'azure', 'bitbucket'
    GITLAB_ACCESS_TOKEN_MEGALINTER = credentials('gitlab-token')
}

Additional Variables

For most setups, MegaLinter derives all needed variables automatically. In rare cases, you may need to set additional platform-specific variables:

• GitLab: Set CI_PROJECT_ID if the project path cannot be parsed from GIT_URL
• Azure DevOps: Set SYSTEM_ACCESSTOKEN as a Jenkins credential