Hortonworks HDP 3.0.1 in docker on CentOS7 has a small bug which prevents it from starting.
There is a small glitch which will prevent you from starting the docker HDP 3.0.1 container named "sandbox-proxy" and can take lot of nerves to solve it. The output message is "Failed to get D-Bus connection".
The solution is relatively simple: go to assets/generate-proxy-deploy-script.sh script, search for the line
docker run --name sandbox-proxy --network=cda \\
and replace it with the
docker run --privileged --name sandbox-proxy --network=cda \\
Run once again the script docker-deploy-hdp30.sh, and that should be it.
Enjoy your HDP!