Remove patch

Dockerfile

@@ -17,10 +17,6 @@ ENV APACHE_DOCUMENT_ROOT /var/www/studip/public
 RUN sed -ri -e 's!/var/www/html!${APACHE_DOCUMENT_ROOT}!g' /etc/apache2/sites-available/*.conf
 RUN sed -ri -e 's!/var/www/!${APACHE_DOCUMENT_ROOT}!g' /etc/apache2/apache2.conf /etc/apache2/conf-available/*.conf
 
-# Patch proxy url problem
-COPY proxy_url.patch /tmp/proxy_url.patch
-RUN cd /var/www/studip/ && svn patch /tmp/proxy_url.patch
-
 # Add custom entrypoint
 COPY docker-entrypoint.sh /usr/local/bin/
 RUN chmod u+x /usr/local/bin/docker-entrypoint.sh

proxy_url.patch

-Index: studip/lib/classes/Request.class.php
-===================================================================
---- studip/lib/classes/Request.class.php	(revision 40367)
-+++ studip/lib/classes/Request.class.php	(working copy)
-@@ -96,6 +96,12 @@
-      */
-     public static function protocol()
-     {
-+
-+	// If a reverse proxy tells us the required protocol we should respect that
-+	if (isset($_SERVER['HTTP_X_FORWARDED_PROTO'])) {
-+		return $_SERVER['HTTP_X_FORWARDED_PROTO'];
-+	}
-+
-         return (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on')
-             ? 'https'
-             : 'http';