message: Added a way to enable xdebug's remote_log with an environment variable.
diff: @@ -39,5 +39,8 @@ if [ ${XDEBUG_ENABLE+x} ]; then
  # Add the found remote_host to xdebug.ini
  echo -e "\n\nxdebug.remote_host=${DOCKERHOST}" >> /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini
  -fi
  + if [ ${XDEBUG_LOG+x} ]; then
  + echo -e "\n\nxdebug.remote_log=/tmp/xdebug.log" >> /usr/local/etc/php/conf.d/docker-php-ext-xdebug.ini
  + fi
  +fi
  