Trigger pipeline after a push on bitbucket server - jenkins

Question

I'm creating this new Job based on pipeline on jenkins. I want my jenkinsfile to be on bitbucket reposiotry : Let's say my config file is on bitbucket.org/config.git
The job mission is to clean install a project bitbucket.org/myProject.git
How can I configure the pipeline so it will trigger if any push is made in bitbucket.org/myProject.git and following the steps defined in bitbucket.org/config.git?
I do not want to create multi-branch pipeline and I do not want my jenkins file to be on the same repository than my project to compile.
My current config is:
pipeline {
agent any
parameters {
string(defaultValue: '', description: 'URL', name: 'GIT_URL')
string(defaultValue: '', description: 'Credential', name: 'CREDENTIAL_ID')
}
stages {
stage ('Initialize') {
steps {
git branch: 'develop', credentialsId: "${params.CREDENTIAL_ID}", url: "${params.GIT_URL}"
}
}
stage ('Build') {
steps {
sh 'mvn clean install '
echo 'build'
}
}
}

Answer 1

You can use shared Libraries in Jenkins. you would still need a Jenkinsfile in your code, but that would not contain any logic. It would simply refer the shared library and pass any params like git repo path.
For more information on shared libraries please refer this link https://jenkins.io/doc/book/pipeline/shared-libraries/.
For triggering the build, you can define a trigger in your pipeline. Example :
triggers {
pollSCM('H/5 * * * *')
}
or use webhooks if you don't want to poll.

Answer 2

Actually, i managed to make it work.
In my jenkins pipeline, i activated "Build when a change is pushed to BitBucket".
node {
checkout([$class: 'GitSCM',
branches: [[name: 'feature/test-b']],
doGenerateSubmoduleConfigurations: false,
extensions: [[$class: 'SubmoduleOption', disableSubmodules: false,
parentCredentials: false, recursiveSubmodules: true, reference: '',
trackingSubmodules: false]], submoduleCfg: [],
userRemoteConfigs: [[credentialsId: 'admin',
url: 'http://localhost:7990/scm/bout/boutique-a.git']]])
}
When a change is made in boutique-a in the branch 'feature/test-b' my job is triggered which is cool.
Now i have this other issue, how can i trigger when change are made in feature/*
It looks like i cannot access to env.BRANCH_NAME when im not in a multibranch pipeline