mediagoblin port

src/freedombone-app-mediagoblin

     echo '    }' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
     echo '' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
     echo '    location / {' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
-    echo '        fastcgi_pass 127.0.0.1:26543;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
+    echo "        fastcgi_pass 127.0.0.1:$MEDIAGOBLIN_PORT;" >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
     echo '        include /etc/nginx/fastcgi_params;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
     echo '        fastcgi_param PATH_INFO $fastcgi_script_name;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
     echo '        fastcgi_param SCRIPT_NAME "";' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME