run complex image names with short names

In cases where the image name is more complex like:

quay/baude/alpine_nginx:latest  and is not from the docker
registry, we need to be able to run the image by its shortname
such as baude/alpine_nginx.  The same goes when the image is
not from a registry but instead has the localhost repository.

This resolves buildah issue #1034

Signed-off-by: baude <bbaude@redhat.com>

libpod/image/image.go

@@ -239,6 +239,7 @@ func (i *Image) getLocalImage() (*storage.Image, error) {
 	if err != nil {
 		return nil, err
 	}
+
 	// the inputname isn't tagged, so we assume latest and try again
 	if !decomposedImage.isTagged {
 		taggedName = fmt.Sprintf("%s:latest", i.InputName)
@@ -247,15 +248,14 @@ func (i *Image) getLocalImage() (*storage.Image, error) {
 			return img.image, nil
 		}
 	}
-	hasReg, err := i.hasRegistry()
+
-	if err != nil {
+	// The image has a registry name in it and we made sure we looked for it locally
-		return nil, errors.Wrapf(err, imageError)
+	// with a tag.  It cannot be local.
+	if decomposedImage.hasRegistry {
+		return nil, errors.Errorf("%s", imageError)
+
 	}
 
-	// if the input name has a registry in it, the image isnt here
-	if hasReg {
-		return nil, errors.Errorf("%s", imageError)
-	}
 	// if the image is saved with the repository localhost, searching with localhost prepended is necessary
 	// We don't need to strip the sha because we have already determined it is not an ID
 	img, err = i.imageruntime.getImage(fmt.Sprintf("%s/%s", DefaultLocalRegistry, i.InputName))
@@ -274,21 +274,8 @@ func (i *Image) getLocalImage() (*storage.Image, error) {
 	if err == nil {
 		return repoImage, nil
 	}
-	return nil, errors.Wrapf(err, imageError)
-}
 
-// hasRegistry returns a bool/err response if the image has a registry in its
+	return nil, errors.Wrapf(err, imageError)
-// name
-func (i *Image) hasRegistry() (bool, error) {
-	imgRef, err := reference.Parse(i.InputName)
-	if err != nil {
-		return false, err
-	}
-	registry := reference.Domain(imgRef.(reference.Named))
-	if registry != "" {
-		return true, nil
-	}
-	return false, nil
 }
 
 // ID returns the image ID as a string

test/e2e/run_test.go

@@ -42,6 +42,28 @@ var _ = Describe("Podman run", func() {
 		Expect(session.ExitCode()).To(Equal(0))
 	})
 
+	It("podman run a container based on a complex local image name", func() {
+		podmanTest.RestoreArtifact(nginx)
+		session := podmanTest.Podman([]string{"run", "baude/alpine_nginx:latest", "ls"})
+		session.WaitWithDefaultTimeout()
+		Expect(session.ErrorToString()).ToNot(ContainSubstring("Trying to pull"))
+		Expect(session.ExitCode()).To(Equal(0))
+	})
+
+	It("podman run a container based on on a short name with localhost", func() {
+		podmanTest.RestoreArtifact(nginx)
+		tag := podmanTest.Podman([]string{"tag", nginx, "localhost/baude/alpine_nginx:latest"})
+		tag.WaitWithDefaultTimeout()
+
+		rmi := podmanTest.Podman([]string{"rmi", nginx})
+		rmi.WaitWithDefaultTimeout()
+
+		session := podmanTest.Podman([]string{"run", "baude/alpine_nginx:latest", "ls"})
+		session.WaitWithDefaultTimeout()
+		Expect(session.ErrorToString()).ToNot(ContainSubstring("Trying to pull"))
+		Expect(session.ExitCode()).To(Equal(0))
+	})
+
 	It("podman run a container based on local image with short options", func() {
 		session := podmanTest.Podman([]string{"run", "-dt", ALPINE, "ls"})
 		session.WaitWithDefaultTimeout()