With jwilder nginx-proxy, how to proxypass a subdirectory url to a specific container?

I use jwilder/nginxproxy to make a reverse proxy. I try to redirect http://localhost:8000/api to a specific php service.

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  • .
    +-- docker-compose.yml
    +-- nginx
    +-- nodejs
    |   +-- index.js
    |   +-- …
    +-- php
    |   +-- api
    

    docker-compose.yml:

    version: "3.1"
    
    services:
    
      nginx-proxy:
        image: jwilder/nginx-proxy:alpine
        ports:
          - "8000:80"
        volumes:
          - ./php:/srv/www
          - /var/run/docker.sock:/tmp/docker.sock:ro
    
      nodejs:
        image: node:alpine
        environment: 
          - NODE_ENV=production
          - VIRTUAL_HOST=localhost
          - VIRTUAL_PORT=8080
        expose:
          - "8080"
        working_dir: /home/app
        restart: always
        volumes:
          - ./nodejs:/home/app
        command: ["node", "index.js"]
    
      php:
        image: php:apache
        environment:
          - VIRTUAL_HOST=localhost
        volumes:
          - ./php:/var/www/html
    

    This works fine for the nodejs service.

    Now, I would like to redirect calls to http://localhost:8000/api to the php service. I imagine that I have to add to the nginx conf something like:

    server {
      location /api {
        proxy_pass http://php:80/api;
        proxy_set_header Host $host;
      }
    }
    

    This feature is not built into the lib.
    So, how can I achieve that?

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  • One Solution collect form web for “With jwilder nginx-proxy, how to proxypass a subdirectory url to a specific container?”

    One approach is to give the php app its own virtual host:

      php:
        image: php:apache
        environment:
          - VIRTUAL_HOST=api.localhost
        volumes:
          - ./php:/var/www/html
    

    Then, it will be accesible as this:

    curl -H 'Host: api.localhost' http://localhost:8000/api
    

    Setting the header can be achieved in practically any language. Or to avoid setting custom header, you can add that DNS to your /etc/hosts file:

    127.0.0.1 api.localhost
    

    So you can curl as this:

    curl -H http://api.localhost:8000/api
    

    This is how set custom headers, for example in node:

    var request = require('request')
    
    var formData = {}
    
    request({
        headers: {
          'Host': 'api.localhost'
        },
        uri: 'http://localhost:8080',
        method: 'POST'
      }, function (err, res, body) {
          console.log("it works")
          console.log(res)
        }
    )
    

    But, I recommend you to go for the /etc/hosts approach, that should has an equivalent in production environment (a DNS server). So you don’t need to touch node code.

    Docker will be the best open platform for developers and sysadmins to build, ship, and run distributed applications.