Pass previous-image to analyzer

See buildpacks#897, buildpacks#1275

Signed-off-by: Ujjwal Goyal <importujjwal@gmail.com>

internal/build/lifecycle_execution.go

@@ -352,6 +352,31 @@ func (l *LifecycleExecution) newAnalyze(repoName, networkMode string, publish bo
 		flagsOpt = WithFlags("-gid", strconv.Itoa(l.opts.GID))
 	}
 
+	if l.opts.PreviousImage != "" {
+		if l.opts.Image == nil {
+			return nil, errors.New("image can't be nil")
+		}
+
+		image, err := name.ParseReference(l.opts.Image.Name(), name.WeakValidation)
+		if err != nil {
+			return nil, fmt.Errorf("invalid image name: %s", err)
+		}
+
+		prevImage, err := name.ParseReference(l.opts.PreviousImage, name.WeakValidation)
+		if err != nil {
+			return nil, fmt.Errorf("invalid previous image name: %s", err)
+		}
+		if publish {
+			if image.Context().RegistryStr() != prevImage.Context().RegistryStr() {
+				return nil, fmt.Errorf(`when --publish is used, <previous-image> must be in the same image registry as <image>
+	            image registry = %s
+	            previous-image registry = %s`, image.Context().RegistryStr(), prevImage.Context().RegistryStr())
+			}
+		}
+
+		args = append(args, l.opts.PreviousImage)
+	}
+
 	if publish {
 		authConfig, err := auth.BuildEnvVar(authn.DefaultKeychain, repoName)
 		if err != nil {