LXC - perl: warning: Setting locale failed.

perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
  LANGUAGE = (unset),
  LC_ALL = (unset),
  LANG = "en_US.UTF-8"
  are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").



root@vm:~# locale -a
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale...