set_root_pw.sh

#!/bin/bash

if [ -f /data/persistant/.root_pw_set ]; then
	echo "Root password already set!"
	exit 0
fi

PASS=${ROOT_PASS:-$(pwgen -s 12 1)}
_word=$( [ ${ROOT_PASS} ] && echo "preset" || echo "random" )
echo "=> Setting a ${_word} password to the root user"
echo "root:$PASS" | chpasswd

echo "=> Done!"
touch /data/persistent/.root_pw_set

UPCASED_UPCASED_SSH_SERVER=`echo "$SSH_SERVER" | tr '[a-z]' '[A-Z]'`
if [  "$UPCASED_SSH_SERVER" == "FALSE"  ] || [  "$UPCASED_SSH_SERVER" == "0"  ]; then

    echo "========================================================================"
    echo You can now connect to this Ubuntu container
    echo ""
    echo To acces docker TTY locally
    echo " docker exec -it [container-id] bash"
    echo ""
    echo The root password is : '$PASS'
    echo ""
    echo "Please remember to change the above password as soon as possible!"

else

    echo "========================================================================"
    echo "You can now connect to this Ubuntu container"
    echo ""
    echo " Using SSH, for reach 1st interface ip at port 22"
    echo " ssh root@"$(ip -o -4 addr show | awk -F '[ /]+' '/global/ {print $4}' | head -n1)
    echo ""
    echo "and enter the root password '$PASS' when prompted"
    echo ""
    echo "Please remember to change the above password as soon as possible!"
    echo "========================================================================"

fi