message: exit bashrc if not running interactively
  enables sftp sessions
diff: #
  # ==============================================================================
  +# If not running interactively, don't do anything
  +[ -z "$PS1" ] && return
  +
  export PS1="\[\e[31m\]tf-docker\[\e[m\] \[\e[33m\]\w\[\e[m\] > "
  export TERM=xterm-256color
  alias grep="grep --color=auto"
  