Docker Redirector

Listens on port 8080 and redirects all web traffic to a given target.

Features

• Lightweight. Uses approximately 2MB of memory.
• Keeps the URL path and parameters by default, but can be configured to be ignored.
• Supports permanent and temporary redirects.

Usage

The redirect target is set by the REDIRECT_TARGET environment variable.

Possible redirect targets include:

• Domains e.g. example.com
• Paths e.g. example.com/page
• Domain with protocol e.g. https://example.com/page

Absolute Redirects

By default, redirects will include the request path. This means that if your REDIRECT_TARGET is example.com/specific/page and you hit the redirector with a path of /other/page, you would be redirected to example.com/specific/page/other/page.

To redirect to a specific target without including the request path, you can set IGNORE_REQUEST_URI to true. In this case you would be redirected to example.com/specific/page regardless of the request path.

Temporary Redirects

By default redirects are permantent. To change the default status code you can set REDIRECT_CODE. For example, to support temporary redirects you can set REDIRECT_CODE to 302.

Docker

To start a container that will redirect to example.com using the plain docker command run:

$ docker run --rm -d -e REDIRECT_TARGET=example.com -p 8080:8080 zappi/redirector

Docker Compose

To start a container that will permanently redirect to example.com, run:

---
version: '3'
services:
  redirect:
    image: zappi/redirector
    ports:
      - "8080:8080"
    environment:
      REDIRECT_TARGET: "example.com"
      REDIRECT_CODE: "302"