A platform is a well defined pack with installed dependencies for a language or framework that a group of applications will need.
Platforms are defined as Dockerfiles and tsuru already have a number of supported ones listed in https://github.com/tsuru/basebuilder
tsuru-admin platform-add platform-name --dockerfile dockerfile-url
For example, to install the Python platform from tsuru’s basebuilder repository you simply have to call:
tsuru-admin platform-add python --dockerfile https://raw.githubusercontent.com/tsuru/basebuilder/master/python/Dockerfile