[DOCKER] Fixed docker environment to properly configure the app environment

docker/nginx/domain.sh

@@ -0,0 +1,5 @@
+#!/bin/sh
+
+cat /var/nginx/social.conf | \
+    sed -r "s/%hostname%/$domain/g; s/%hostname_root%/$domain_root/g" > \
+        /etc/nginx/conf.d/social.conf