REACT_APP_X = x-from-original-env
REACT_APP_ORIGINAL_1 = from-original-env-1
REACT_APP_ORIGINAL_2 = from-original-env-2
REACT_APP_BASIC = basic
REACT_APP_BASIC_EXPAND = ${REACT_APP_BASIC}
REACT_APP_BASIC_EXPAND_SIMPLE = $REACT_APP_BASIC
REACT_APP_EXPAND_EXISTING = $REACT_APP_SHELL_ENV_MESSAGE