Hi everyone!

I'm trying to find the right configuration to run a webserver and a Jenkins instance on the same machine. I also need to use subpaths for the routing instead of subdomains. In this case, I wanted to be able to reach the Jenkins instance by adding /ci to the domain name.

This is the docker compose I came up with, both following the Jenkins guides and the nginx-proxy docs.

services:
    reverse-proxy:
        container_name: reverse-proxy
        restart: always
        networks:
            - reverse-proxy
        ports:
            - 80:80
        environment:
            - DEFAULT_HOST=${HOSTNAME}
        volumes:
            - /var/run/docker.sock:/tmp/docker.sock:ro
        image: nginxproxy/nginx-proxy:1.9
    jenkins:
        container_name: jenkins
        restart: always
        networks:
            - jenkins
            - reverse-proxy
        environment:
            - DOCKER_HOST=tcp://docker:2376
            - DOCKER_CERT_PATH=/certs/client
            - DOCKER_TLS_VERIFY=1
            - VIRTUAL_HOST=${HOSTNAME}
            - VIRTUAL_PORT=8080
            - VIRTUAL_PATH=/ci/
            - VIRTUAL_DEST=/
        expose:
            - 8080
            - 50000
        volumes:
            - jenkins-data:/var/jenkins_home
            - jenkins-docker-certs:/certs/client:ro
        image: jenkins/jenkins:lts-jdk21

I omitted some services and all networks and volumes.

Here is the output of docker exec reverse-proxy nginx -T: nginx-output.txt

For now I'm running this config on a virtual machine, so I've set HOSTNAME=localhost in my .env file.

The problem I am facing is that when I reach localhost/ci I get redirected to the Jenkins login page on localhost/login?from=%2F, which returns 404 as expected due to the fact that the /ci has been lost. Also, static assets in the HTML are referenced by /static/assets/... and they are not loaded correctly.

What am I missing for this use case? Is nginx-proxy capable of handling this use case at all? Do I have to write custom locations for the subpath? Or should I just try to move to a subdomain logic instead of subpaths?

Thank you 🙏🏻