Proper way to run docker container using Jenkinsfile - docker

Question

When making a jenkinsfile, I have steps to run dockers image which pulling from my docker hub.
stage('pull image and run') {
steps {
sh '''
docker login -u <username> -p <password>
docker run -d -p 9090:3000 <tag>
'''
}
}
This step is okay if I run this script the first time. However, if I run this script the second time, it will get this error.
Login Succeeded
+ docker run -d -p 9090:3000 <tag>
669955464d74f9b5186b437b7127ca0a24f6ea366f3a903c673489bec741cf78
docker: Error response from daemon: driver failed programming external connectivity on endpoint distracted_driscoll (db16abd899cf0cbd4f26cf712b1eee4ace5b491e061e2e31795c2669296068eb): Bind for 0.0.0.0:9090 failed: port is already allocated.
[Pipeline] }
[Pipeline] // stage
[Pipeline] }
[Pipeline] // withEnv
[Pipeline] }
[Pipeline] // node
[Pipeline] End of Pipeline
ERROR: script returned exit code 125
Finished: FAILURE
Obviously, the port 9090 is not available so the execution failed.
Question:
What is the correct way to upgrade an app inside a docker container?
I can stop the container before running the docker run, but I can't find a proper way to do that in jenkinsfile steps.
Any suggestion?
Thanks

Answer 1

Jenkins has really good docker support to make your build proceed within docker container. good example can be found here
One declarative example to do maven build will be:
pipeline {
agent {
docker {
image 'maven:3-alpine'
args '-v /tmp:/tmp'
registryUrl 'https://myregistry.com/'
registryCredentialsId 'myPredefinedCredentialsInJenkins'
}
}
stages {
stage("01") {
steps {
sh "mvn -v"
}
}
stage("02") {
steps {
sh "mvn --help"
}
}
}
}
In a scripted pipeline, it would be
node {
docker.withRegistry('https://registry.example.com', 'credentials-id') {
docker.image('node:14-alpine').inside("-v /tmp:/tmp") {
stage('Test') {
sh 'node --version'
}
}
}
}