use checksum reference

server/images.go

@@ -287,6 +287,15 @@ func CreateModel(ctx context.Context, name string, commands []parser.Command, fn
 
 		switch c.Name {
 		case "model":
+			if strings.HasPrefix(c.Args, "@") {
+				blobPath, err := GetBlobsPath(strings.TrimPrefix(c.Args, "@"))
+				if err != nil {
+					return err
+				}
+
+				c.Args = blobPath
+			}
+
 			bin, err := os.Open(realpath(c.Args))
 			if err != nil {
 				// not a file on disk so must be a model reference

server/routes.go

@@ -650,7 +650,7 @@ func CopyModelHandler(c *gin.Context) {
 	}
 }
 
-func GetBlobHandler(c *gin.Context) {
+func HeadBlobHandler(c *gin.Context) {
 	path, err := GetBlobsPath(c.Param("digest"))
 	if err != nil {
 		c.AbortWithStatusJSON(http.StatusBadRequest, gin.H{"error": err.Error()})
@@ -771,9 +771,10 @@ func Serve(ln net.Listener, allowOrigins []string) error {
 		})
 
 		r.Handle(method, "/api/tags", ListModelsHandler)
-		r.Handle(method, "/api/blobs/:digest/path", GetBlobHandler)
 	}
 
+	r.HEAD("/api/blobs/:digest", HeadBlobHandler)
+
 	log.Printf("Listening on %s (version %s)", ln.Addr(), version.Version)
 	s := &http.Server{
 		Handler: r,