How can I run Orthanc behind Apache?

It is possible to make Orthanc run behind Apache using the reverse proxy mechanism. To map the REST API of an Orthanc server listening on the port 8000 on the URI /Orthanc, paste the following code in your /etc/apache2/httpd.conf:

LoadModule proxy_module /usr/lib/apache2/modules/mod_proxy.so
LoadModule proxy_http_module /usr/lib/apache2/modules/mod_proxy_http.so
ProxyRequests On
ProxyPass /Orthanc/ http://localhost:8000/ retry=0

Note: These instructions are for Ubuntu 11.10. You most probably have to adapt the absolute paths above to your distribution.