use the same Jenkinsfile for several github repositories

To accomplish this, I would suggest to create a pipeline with two parameters and pass the values based on the repo to build. 1) GIT BRANCH - to build and deploy required branch

2) GIT URL - to provide the git URL to checkout the code.

Providing a reference template.

node('NODE NAME') {     withEnv([REQUIRED ENV VARIBALES])     {   withCredentials([[$class: 'UsernamePasswordMultiBinding', credentialsId: 'CREDENTIALS ID', passwordVariable: 'PW', usernameVariable: 'USER']])         {   try                 {   stage 'Build'                         checkout changelog: false, poll: false, scm: [$class: 'GitSCM', branches: [[name: gitbranch]], doGenerateSubmoduleConfigurations: false,                                   extensions: [], submoduleCfg: [], userRemoteConfigs: [[credentialsId: 'CREDENTIALS ID',                                   url: 'GIT URL']]]                                ****                                MAVEN BUILD                                ****                    stage 'Docker Image build & Push'                                *****                                DOCKER BUILD AND PUSH TO REPO                                *****                }              catch (err) {                notify("Failed ${err}")                currentBuild.result = 'FAILURE'                }                stage 'Deploy to ENV'                *****                DEPLOYMENT TO REQUIRED ENV                *****                notify('Success -Deployed to Environment')                catch (err) {                 notify("Failed ${err}")                currentBuild.result = 'FAILURE'                }         }       }}def notify(status){****NOTIFICATION FUCNTION****}

Link the Jenkinsfile in the pipeline job and provide the values- build with parameters, while building the Jenkins job.

Hope this helps.