In this exercise, we will define a task which executes go test to test your go code.
This task will run go test command for your go project.
You can use the go runtime image gcr.io/google_appengine/golang
To run all tests inside inside this container image for the golang/archive package,
docker run -i gcr.io/google_appengine/golang go test archive/...
ok archive/tar 0.029s
ok archive/zip 7.997s