go mod tidy

go.mod

@@ -6,13 +6,14 @@ require (
 	github.com/fsouza/go-dockerclient v1.7.0
 	github.com/gizak/termui v2.3.0+incompatible
 	github.com/jgautheron/codename-generator v0.0.0-20150829203204-16d037c7cc3c
-	github.com/mattn/go-runewidth v0.0.0-20170201023540-14207d285c6c // indirect
+	github.com/mattn/go-runewidth v0.0.0-20170201023540-14207d285c6c
 	github.com/mitchellh/go-wordwrap v0.0.0-20150314170334-ad45545899c7 // indirect
 	github.com/nsf/termbox-go v0.0.0-20180303152453-e2050e41c884
 	github.com/nu7hatch/gouuid v0.0.0-20131221200532-179d4d0c4d8d
 	github.com/op/go-logging v0.0.0-20160211212156-b2cb9fa56473
 	github.com/opencontainers/runc v1.0.0-rc93
 	github.com/pkg/errors v0.9.1
+	github.com/stretchr/testify v1.4.0
 )
 
 replace github.com/gizak/termui => github.com/bcicen/termui v0.0.0-20180326052246-4eb80249d3f5