Update buildkit

- updated buildkit to current code in master via:

  go mod edit -require github.com/moby/buildkit@master && go mod tidy && ./hack/update-vendor

Signed-off-by: Alex Couture-Beil <alex@earthly.dev>

vendor/github.com/containerd/containerd/content/adaptor.go

@@ -22,7 +22,7 @@ import (
 	"github.com/containerd/containerd/filters"
 )
 
-// AdoptInfo returns `filters.Adaptor` that handles `content.Info`.
+// AdaptInfo returns `filters.Adaptor` that handles `content.Info`.
 func AdaptInfo(info Info) filters.Adaptor {
 	return filters.AdapterFunc(func(fieldpath []string) (string, bool) {
 		if len(fieldpath) == 0 {

vendor/github.com/containerd/containerd/remotes/docker/pusher.go

@@ -354,7 +354,7 @@ func (pw *pushWriter) Commit(ctx context.Context, size int64, expected digest.Di
 	switch resp.StatusCode {
 	case http.StatusOK, http.StatusCreated, http.StatusNoContent, http.StatusAccepted:
 	default:
-		return errors.Errorf("unexpected status: %s", resp.Status)
+		return remoteserrors.NewUnexpectedStatusErr(resp.Response)
 	}
 
 	status, err := pw.tracker.GetStatus(pw.ref)

vendor/github.com/containerd/containerd/remotes/docker/registry.go

@@ -56,6 +56,7 @@ const (
 	// Reserved for future capabilities (i.e. search, catalog, remove)
 )
 
+// Has checks whether the capabilities list has the provide capability
 func (c HostCapabilities) Has(t HostCapabilities) bool {
 	return c&t == t
 }

vendor/github.com/containerd/containerd/remotes/errors/errors.go

@@ -27,9 +27,10 @@ var _ error = ErrUnexpectedStatus{}
 
 // ErrUnexpectedStatus is returned if a registry API request returned with unexpected HTTP status
 type ErrUnexpectedStatus struct {
-	Status     string
-	StatusCode int
-	Body       []byte
+	Status                    string
+	StatusCode                int
+	Body                      []byte
+	RequestURL, RequestMethod string
 }
 
 func (e ErrUnexpectedStatus) Error() string {
@@ -42,5 +43,14 @@ func NewUnexpectedStatusErr(resp *http.Response) error {
 	if resp.Body != nil {
 		b, _ = ioutil.ReadAll(io.LimitReader(resp.Body, 64000)) // 64KB
 	}
-	return ErrUnexpectedStatus{Status: resp.Status, StatusCode: resp.StatusCode, Body: b}
+	err := ErrUnexpectedStatus{
+		Body:          b,
+		Status:        resp.Status,
+		StatusCode:    resp.StatusCode,
+		RequestMethod: resp.Request.Method,
+	}
+	if resp.Request.URL != nil {
+		err.RequestURL = resp.Request.URL.String()
+	}
+	return err
 }

vendor/github.com/containerd/containerd/remotes/handlers.go

@@ -115,6 +115,12 @@ func fetch(ctx context.Context, ingester content.Ingester, fetcher Fetcher, desc
 		return err
 	}
 
+	if desc.Size == 0 {
+		// most likely a poorly configured registry/web front end which responded with no
+		// Content-Length header; unable (not to mention useless) to commit a 0-length entry
+		// into the content store. Error out here otherwise the error sent back is confusing
+		return errors.Wrapf(errdefs.ErrInvalidArgument, "unable to fetch descriptor (%s) which reports content size of zero", desc.Digest)
+	}
 	if ws.Offset == desc.Size {
 		// If writer is already complete, commit and return
 		err := cw.Commit(ctx, desc.Size, desc.Digest)

vendor/github.com/containerd/containerd/version/version.go

@@ -23,7 +23,7 @@ var (
 	Package = "github.com/containerd/containerd"
 
 	// Version holds the complete version number. Filled in at linking time.
-	Version = "1.5.0-beta.3+unknown"
+	Version = "1.5.0-beta.4+unknown"
 
 	// Revision is filled with the VCS (e.g. git) revision being used to build
 	// the program at linking time.