message: Allow auto_prepend_file & auto_append_file to be configured by env var.
diff: @@ -479,11 +479,11 @@ post_max_size = 2048M
  ; Automatically add files before PHP document.
  ; http://php.net/auto-prepend-file
  -auto_prepend_file =
  +auto_prepend_file = ${PHP_AUTO_PREPEND_FILE:-none}
  ; Automatically add files after PHP document.
  ; http://php.net/auto-append-file
  -auto_append_file =
  +auto_append_file = ${PHP_AUTO_APPEND_FILE:-none}
  ; By default, PHP will output a character encoding using
  ; the Content-type: header. To disable sending of the charset, simply
  