In docker/docker_names.sh you can see all default params for building container. For example,
# default password
DOCKER_USER_PASSWORD=user
# default username
DOCKER_USER_NAME=user
etc.
If you just downloaded the project,
cd pointtrack
source docker/docker_names.sh
sh docker/build.sh
sh docker/start_devel.sh
If you want to enter the installed environment,
cd pointtrack
source docker/docker_names.sh
sh docker/into.sh
If you want to delete the environment,
cd pointtrack
source docker/docker_names.sh
sh docker/delete.sh