Add the following to your bashrc.
#Add another docker window
function dock()
{
if [ "$1" == "-h" ]
then
#display help
printf "Attaches this window as a new terminal (bash) instance to a running docker container\n"
printf "Usage: 'dock' or 'dock 6548as846'\n"
printf "Accepts container name or id\n"
printf "If no ID is given, then attaches to first found process.\n"
elif [ $# -eq 0 ]
then
#Get the first process
dockerpid="$(docker ps -q | head -1)"
echo $dockerpid
sudo docker exec -i -t --user $USER $dockerpid /bin/bash
elif [ "$1" != "-h" ]
then
#Open terminal in that process
sudo docker exec -i -t --user $USER $1 /bin/bash
fi
}