Installation
You can install Janus using docker or manually deploying the binary.
Docker
The simplest way of installing janus is to run the docker image for it. Just check the docker-compose.yml example and then run it.
docker-compose up -d
Now you should be able to get a response from the gateway.
Try the following command:
http http://localhost:8080/
You can find more details about how to use Janus docker image here.
Manual
You can get the binary and play with it in your own environment (or even deploy it where ever you like). Just go to the releases page and download the latest one for your platform.