added inplace option to sed

Dockerfile

@@ -18,7 +18,7 @@ RUN mkdir /var/lib/dav/
 RUN chown deploy:deploy /var/lib/dav/
 
 # apache should run as user deploy
-RUN sed -r 's/(User|Group) apache/\1 deploy/' /etc/apache2/httpd.conf > /etc/apache2/httpd.conf
+RUN sed -i .bak -r 's/(User|Group) apache/\1 deploy/' /etc/apache2/httpd.conf
 
 RUN openrc
 RUN touch /run/openrc/softlevel

dav_svn.conf

@@ -1,6 +1,5 @@
 LoadModule dav_svn_module /usr/lib/apache2/mod_dav_svn.so
 LoadModule authz_svn_module /usr/lib/apache2/mod_authz_svn.so
-LoadModule mpm_prefork_module modules/mod_mpm_prefork.so
 
 <VirtualHost 127.0.0.1:8000>
     <Location />