sardaukar/nginx-proxy-simple repository overview

⁠nginx-proxy-simple

Simple way to have traffic forwarded to an IP on your LAN. Based on docker-nginx-redirect⁠.

⁠Why

I started using seelf⁠ for hosting my Docker compose apps, but I needed to redirect some domain names to services running on internal IPs. In the past, I had this with Traefik:

http:
  routers:
    dsm:
      rule: "Host(`dsm.my.domain.name`)"
      service: synology-dsm
      entrypoints:
        - "https"
      tls:
        certResolver: gandi
        domains:
          - main: "my.domain.name"
            sans:
              - "*.my.domain.name"

  services:
    synology-dsm:
      loadBalancer:
        servers:
          - url: http://192.168.1.12:5000
        passHostHeader: "true"

With seelf, I don't need to set the domain name (the app's name comes from the application you create) or manage the certificate, but I still needed a way for "non-compose" apps to be exposed, so this Docker image fixes that.

Just create a new app in seelf with the subdomain name you want to use (in this case, dsm), and then set the environment for the nginx service to, mirroring the above example with Traefik:

SERVER_NAME=dsm.my.domain.name
PROXY_TARGET_IP=192.168.1.12
PROXY_TARGET_PORT=5000
PROXY_PROTO=http

And set the deployment to:

services:
  nginx:
    image: sardaukar/nginx-proxy-simple
    ports:
      - "8888:80"

And it should just work. Kudos to Tobias Munk⁠ for the basics of how to pull this off.