1.Install dependent package(CentOS7)
yum install python-pip
2.Get install source code
git clone https://github.com/liftoff/GateOne.git
cd  GateOne/
python setup.py install
3. Start this service will Generate the configuration file(/etc/gateone/*)
/etc/gateone # GateOne's default install dir
service gateone start
4. You will see some messages flash by, wait untill you see something like:GateOne will by default run on 443(https), and will allow access only from the hostname that it autodetects, so make sure that whaterver URL you normally access, this server through is listed in GateOne’s orgin list:
Listening on https://*:443/
vim /etc/gateone/conf.d/10server.conf
5.Now run:
/etc/init.d/gateone start 
service gateone start
6.Access Webssh:
like this:

Sure ,the GateOne has Docker Version, you can:
docker pull gateone
docker run -d --name=gateone -p 443:8000 liftoff/gateone
git clone https://github.com/liftoff/GateOne.git
cd  GateOne/docker
docker build -t gateone .