def scale(container_count, timeout: 10)
      args = container_count.map {|service, count| "#{service}=#{count}"}
      o = opts(timeout: [timeout, 10])
      run!('scale', o, *args)
    end
def scale(container_count, timeout: 10)
      args = container_count.map {|service, count| "#{service}=#{count}"}
      o = opts(timeout: [timeout, 10])
      run!('scale', o, *args)
    end
Idempotently scales the number of containers for given services in the project.
 @param [Hash] container_count per service, e.g. {web: 2, worker: 3}
 @param [Integer] timeout how long to wait for each service to scale