I have a situation with a CI Pipeline I'm trying to implement using Jenkins and Docker .

Inside my pipeline I want to: download a python uwsgi web app, build it in a docker container, run it, then execute API tests against the container's endpoints.


  • I am using a jenkins-docker image ran with docker.sock volume mounted
  • I run the python web app in the docker container, with a volume mounted to docker.sock, so the container mounts on the docker host on the linux server (which also hosts my jenkins docker container)
  • I exposed port 4000 on the python app, I can access the python web app endpoints from the Linux server (curl request), I can access it from the network via browser requests, but I cannot, for the life of me, access the endpoint from the jenkins pipeline

I get the error Failed to connect to port 4000: Connection refused. I also tried with localhost:4000, I get the same result

My pipeline looks like this

node {
def app

stage('Clone repository') {
    git 'https://github.com/....'

stage('Build image') {
    app = docker.build('img:tag', '.')
    sh 'docker run -d -p 4000:4000 -v /var/run/docker.sock:/var/run/docker.sock img:tag'
    sleep time: 1, unit: 'MINUTES'
    sh 'curl'


Can anyone please help me with this? Thank you!

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