write output of linter to logfile and not stdout

#!/bin/bash

# Copyright ETSI 2020

LOGFILE=yang-linting.log

echo "------ Switching to $1 folder --------"

cd $1

echo "------ Linting all YANG files ------"

#  Display all  errors and warnings to the user. Errors are allowed.

docker run --rm -v $(pwd)/yang-models:/yang hellt/pyang:2.1 "/bin/sh" -c 'pyang --lint -p external-yams _3gpp-*.yang'

docker run --rm -v $(pwd)/yang-models:/yang hellt/pyang:2.1 "/bin/sh" -c 'pyang --lint -p external-yams _3gpp-*.yang' 2>>$LOGFILE >>$LOGFILE

ret=$?

echo "Output of Linting commad saved to $LOGFILE."

echo "------ Linting result ------"

echo $ret

if [ $ret == 1 ] ; then

	echo "Some issues were collected by the linter, but they are treated as warnings and are not failing the validation."

	echo "To see the full output of the linter, download the archived artifact named '$LOGFILE'."

fi

# exit $ret

exit 0