fix release validation

.gitlab-ci.yml

@@ -1,4 +1,4 @@
-image: "domaindrivenarchitecture/devops-build:4.0.1"
+image: "domaindrivenarchitecture/devops-build:4.0.2"
 
 before_script:
   - python --version

src/main/python/ddadevops/domain/release.py

@@ -29,7 +29,6 @@ class Release(Validateable):
         result = []
         result += self.__validate_is_not_empty__("release_type")
         result += self.__validate_is_not_empty__("release_main_branch")
-        result += self.__validate_is_not_empty__("release_current_branch")
         result += self.__validate_is_not_empty__("release_primary_build_file")
         result += self.__validate_is_not_empty__("version")
         try:
@@ -47,12 +46,14 @@ class Release(Validateable):
                 )
         if self.version:
             result += self.version.validate()
-        if (
-            self.release_type is not None
-            and self.release_type != ReleaseType.NONE
-            and self.release_main_branch != self.release_current_branch
-        ):
-            result.append(f"Releases are allowed only on {self.release_main_branch}")
+        if self.release_type is not None:
+            result += self.__validate_is_not_empty__("release_current_branch")
+            if (
+                self.release_current_branch is not None
+                and self.release_type != ReleaseType.NONE
+                and self.release_main_branch != self.release_current_branch
+            ):
+                result.append(f"Releases are allowed only on {self.release_main_branch}")
         return result
 
     def build_files(self) -> List[str]: