Apache Reverse Proxy

This docker image contains an Apache Httpd Server with proxy enabled, actually following modules are enabled :

• mod_proxy

  • proxy_http
  • proxy_ajp
  • proxy_balancer
  • proxy_wstunnel

• rewrite

• headers

Then the container contains two directries :

• /app : this directory will be the DocumentRoot of the Apache Web Server, if you've planed to use this container for proxy use only you may not use this directory.
• /conf : All files matching *.conf in this directory will be included in the vhost configuration (in the beginning of the vhost file)

Example :

Imagine you are building a Wordpress site, you may have to use a container for Wordpress execution, that use a MySql Database (in another container), and for administering the database you want to use a phpmyadmin (in a container), so you will have at leat 3 containers :

• wordpress
• mysql
• phpmyadmin

For executing all those containers you may use command like that :

docker run -d --name mysql mysql-container-image
docker run -d -p 8080:80 --link mysql:mysql --name phpmyadmin phpmyadmin-container-image 
docker run -d -p 80:80 --link mysql:mysql --name wordpress wordpress-docker-image

The "Apache Reverse Proxy" container will allow you to put all those containers behind a proxy. In order to do that, you will have to create a new docker image (with a new Dockerfile), create a proxy.conf file, and then build your proxy.

Dockerfile:

FROM rgoyard/apache-proxy:latest
MAINTAINER Your Name <you@mail.com>
ADD proxy.conf /conf/

Then you need to create a proxy.conf file with the following lines

ProxyPass / http://wordpress/
ProxyPass /phpmyadmin http://phpmyadmin/

And you are ready to build and run your proxy

docker build -t company/project-name:version .  

Now run it :

docker run -d --name mysql mysql-container-image
docker run -d --link mysql:mysql --name phpmyadmin phpmyadmin-container-image 
docker run -d --link mysql:mysql --name wordpress wordpress-docker-image
docker run -d -p 80:80 --link wordpress:wordpress --link phpmyadmin:phpmyadmin --name myProject company/project-name:version

That's it !

Note

: There is no need anymore to expose the "real" port of wordpress and phpmyadmin, as they are accessed from a reverse proxy

Of course you can use docker-compose (or fig) to create a full configuration file ...

This is a fork of rgoyard/apache-proxy.