vendor: fix docker/docker vendoring (update to 9f28837c1d93

commit c41b006be1 updated the version of
docker/docker in go.mod, but possibly overlooked that there was still a
replace rule present. As a result the version was not actually updated.

This patch removes the replace rule, updating docker/docker to 9f28837c1d93

full diff: 4634ce647c...9f28837c1d

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

vendor/github.com/moby/sys/mount/mount.go

@@ -0,0 +1,98 @@
+// +build go1.13
+
+package mount
+
+import (
+	"fmt"
+	"sort"
+	"strconv"
+
+	"github.com/moby/sys/mountinfo"
+)
+
+// mountError records an error from mount or unmount operation
+type mountError struct {
+	op             string
+	source, target string
+	flags          uintptr
+	data           string
+	err            error
+}
+
+func (e *mountError) Error() string {
+	out := e.op + " "
+
+	if e.source != "" {
+		out += e.source + ":" + e.target
+	} else {
+		out += e.target
+	}
+
+	if e.flags != uintptr(0) {
+		out += ", flags: 0x" + strconv.FormatUint(uint64(e.flags), 16)
+	}
+	if e.data != "" {
+		out += ", data: " + e.data
+	}
+
+	out += ": " + e.err.Error()
+	return out
+}
+
+// Cause returns the underlying cause of the error.
+// This is a convention used in github.com/pkg/errors
+func (e *mountError) Cause() error {
+	return e.err
+}
+
+// Unwrap returns the underlying error.
+// This is a convention used in golang 1.13+
+func (e *mountError) Unwrap() error {
+	return e.err
+}
+
+// Mount will mount filesystem according to the specified configuration.
+// Options must be specified like the mount or fstab unix commands:
+// "opt1=val1,opt2=val2". See flags.go for supported option flags.
+func Mount(device, target, mType, options string) error {
+	flag, data := parseOptions(options)
+	return mount(device, target, mType, uintptr(flag), data)
+}
+
+// Unmount lazily unmounts a filesystem on supported platforms, otherwise
+// does a normal unmount.
+func Unmount(target string) error {
+	return unmount(target, mntDetach)
+}
+
+// RecursiveUnmount unmounts the target and all mounts underneath, starting with
+// the deepsest mount first.
+func RecursiveUnmount(target string) error {
+	mounts, err := mountinfo.GetMounts(mountinfo.PrefixFilter(target))
+	if err != nil {
+		return err
+	}
+
+	// Make the deepest mount be first
+	sort.Slice(mounts, func(i, j int) bool {
+		return len(mounts[i].Mountpoint) > len(mounts[j].Mountpoint)
+	})
+
+	var suberr error
+	for i, m := range mounts {
+		err = unmount(m.Mountpoint, mntDetach)
+		if err != nil {
+			if i == len(mounts)-1 { // last mount
+				return fmt.Errorf("%w (possible cause: %s)", err, suberr)
+			}
+			// This is a submount, we can ignore the error for now,
+			// the final unmount will fail if this is a real problem.
+			// With that in mind, the _first_ failed unmount error
+			// might be the real error cause, so let's keep it.
+			if suberr == nil {
+				suberr = err
+			}
+		}
+	}
+	return nil
+}