style: rm unneeded type assertions

cli/recipe/recipe.go

@@ -188,7 +188,7 @@ This is step 1 of upgrading a recipe. Step 2 is running "abra recipe sync
 				logrus.Fatal(err)
 			}
 
-			image := reference.Path(img.(reference.Named))
+			image := reference.Path(img)
 			regVersions, err := client.GetRegistryTags(image)
 			if err != nil {
 				logrus.Fatal(err)
@@ -263,7 +263,9 @@ This is step 1 of upgrading a recipe. Step 2 is running "abra recipe sync
 				logrus.Fatal(err)
 			}
 
-			config.UpdateAppComposeTag(recipe, image, upgradeTag)
+			if err := config.UpdateAppComposeTag(recipe, image, upgradeTag); err != nil {
+				logrus.Fatal(err)
+			}
 		}
 
 		return nil

client/registry.go

@@ -34,7 +34,7 @@ func GetRegistryTags(image string) (RawTags, error) {
 
 // getRegv2Token retrieves a registry v2 authentication token.
 func getRegv2Token(image reference.Named) (string, error) {
-	img := reference.Path(image.(reference.Named))
+	img := reference.Path(image)
 	authTokenURL := fmt.Sprintf("https://auth.docker.io/token?service=registry.docker.io&scope=repository:%s:pull", img)
 	req, err := http.NewRequest("GET", authTokenURL, nil)
 	if err != nil {
@@ -75,7 +75,7 @@ func getRegv2Token(image reference.Named) (string, error) {
 
 // GetTagDigest retrieves an image digest from a v2 registry
 func GetTagDigest(image reference.Named) (string, error) {
-	img := reference.Path(image.(reference.Named))
+	img := reference.Path(image)
 	tag := image.(reference.NamedTagged).Tag()
 	manifestURL := fmt.Sprintf("https://index.docker.io/v2/%s/manifests/%s", img, tag)
 

config/app.go

@@ -268,7 +268,7 @@ func UpdateAppComposeTag(recipe, image, tag string) error {
 				logrus.Fatal(err)
 			}
 
-			composeImage := reference.Path(img.(reference.Named))
+			composeImage := reference.Path(img)
 			if strings.Contains(composeImage, "library") {
 				// ParseNormalizedNamed prepends 'library' to images like nginx:<tag>,
 				// postgres:<tag>, i.e. images which do not have a username in the

tagcmp/tagcmp.go

@@ -74,11 +74,7 @@ func (t Tag) IsGreaterThan(tag Tag) bool {
 // take into account here, shorter is bigger (i.e. 2.1 < 2.1.1 == false, 2 <
 // 2.1 == false).
 func (t Tag) IsLessThan(tag Tag) bool {
-	if t.IsGreaterThan(tag) {
-		return false
-	}
-
-	return true
+	return !t.IsGreaterThan(tag)
 }
 
 // Equals tests Tag equality
@@ -106,11 +102,7 @@ func (t Tag) Equals(tag Tag) bool {
 
 	p1, _ := strconv.Atoi(t.Patch)
 	p2, _ := strconv.Atoi(tag.Patch)
-	if p1 != p2 {
-		return false
-	}
-
-	return true
+	return p1 == p2
 }
 
 // String formats a Tag correctly in string representation