Error when build cardano-sl

Hi!
I building the Cardano SL node. Next command return error:

nix-build -A cardano-sl-node-static --out-link master
error: attribute ‘cardano-sl-node-static’ in selection path ‘cardano-sl-node-static’ not found

OS: Ubuntu 16.04
How do I install cardano-sl node?

Please follow the exchange onboarding guide