fix docker pre-fetch of go modules
fix docker pre-fetch of go modules

Signed-off-by: Morgan Tocker <cfa41afc5ac20f7c1e01316e2d765e1ba4c4bf7a@gmail.com>

tinyspeck/vitess,vitessio/vitess,tinyspeck/vitess,vitessio/vitess,vitessio/vitess,mahak/vitess,tinyspeck/vitess,mahak/vitess,mahak/vitess,mahak/vitess,mahak/vitess,mahak/vitess,mahak/vitess,tinyspeck/vitess,vitessio/vitess,vitessio/vitess,tinyspeck/vitess,vitessio/vitess,tinyspeck/vitess,vitessio/vitess,tinyspeck/vitess,mahak/vitess,vitessio/vitess