Don't read replies directly from tty in case we try to actually use stdin (#918)
Don't read replies directly from tty in case we try to actually use stdin (#918)

Using tty instead of stdin makes it impossible to run `yes | ./docker.sh update`.
SlvrEagle23/AzuraCast,SlvrEagle23/AzuraCast,AzuraCast/AzuraCast,AzuraCast/AzuraCast,SlvrEagle23/AzuraCast,SlvrEagle23/AzuraCast,SlvrEagle23/AzuraCast,AzuraCast/AzuraCast,AzuraCast/AzuraCast