$ docker swarm init
$ git clone https://github.com/openfaas/faas && \
  cd faas && \
  ./deploy_stack.sh

$ faas-cli build -f template.yml

$ faas-cli deploy -f template.yml

$ curl -X POST http://localhost:8080/function/eval -d \
  '{"code": "let test = 4; console.log(test + 21)"}'
{"status":"success","results":"25"}%