added apache2 proxy config

contrib/apache2/zammad.conf

@@ -0,0 +1,45 @@
+#
+# this is the apache config for zammad
+#
+
+<VirtualHost *:80>
+    # replace 'localhost' with your fqdn if you want to use zammad from remote
+    ServerName localhost
+
+    ## don't loose time with IP address lookups
+    HostnameLookups Off
+
+    ## needed for named virtual hosts
+    UseCanonicalName Off
+
+    ## configures the footer on server-generated documents
+    ServerSignature Off
+
+    ProxyRequests Off
+    ProxyPreserveHost On
+
+    <Proxy *>
+        Order deny,allow
+        Allow from localhost
+    </Proxy>
+
+    ProxyPass /assets !
+    ProxyPass /favicon.ico !
+    ProxyPass /robots.txt !
+    ProxyPass /ws ws://localhost:6042/
+    ProxyPass / http://localhost:3000/
+
+    DocumentRoot "/opt/zammad/public"
+
+    <Directory />
+        Options FollowSymLinks
+        AllowOverride None
+    </Directory>
+
+    <Directory "/opt/zammad/public">
+        Options FollowSymLinks
+        Order allow,deny
+        Allow from all
+    </Directory>
+
+</VirtualHost>