update

Imports

• github.com/docker/docker/api/types
• github.com/docker/docker/client
• github.com/kelda-inc/kelda/ci/assert
• github.com/kelda-inc/kelda/ci/util
• github.com/kelda-inc/kelda/pkg/errors
• github.com/sirupsen/logrus
• github.com/stretchr/testify/assert
• github.com/stretchr/testify/require

Standard library imports

• bytes
• context
• encoding/base64
• encoding/json
• io/ioutil
• os
• os/exec
• testing
• time