Imports github.com/containerd/containerd/content github.com/containerd/containerd/errdefs github.com/containerd/containerd/filters github.com/containerd/containerd/log github.com/containerd/containerd/sys github.com/opencontainers/go-digest github.com/pkg/errors Standard library imports context fmt io io/ioutil math/rand path/filepath os strings runtime strconv sync syscall time