feature: names refactoring, Jenkinsfile edit, example edit, bug fixes

src/main/groovy/util/DockerLogin.groovy

@@ -18,9 +18,20 @@ class DockerLogin {
 
         // Логинимся в Registry
         ScriptLog.printf "Performing login to registry..."
-        def registryName = System.getGlobalProperty("ci.docker.registry")
-        def registryUser = System.getGlobalProperty("ci.docker.registry.username")
-        def registryPassword = System.getGlobalProperty("ci.docker.registry.password")
+
+        def registryName = CIProperties.getProperty("docker.registry")
+        def registryUser = CIProperties.getProperty("docker.registry.username")
+        def registryPassword = CIProperties.getProperty("docker.registry.password")
+
+        if (registryName.isNullOrBlank()) {
+            throw new IllegalStateException("Docker registry name not set")
+        }
+        if (registryUser.isNullOrBlank()) {
+            throw new IllegalStateException("Docker registry user not set")
+        }
+        if (registryPassword.isNullOrBlank()) {
+            throw new IllegalStateException("Docker registry password not set")
+        }
 
         sh "docker login $registryName -u $registryUser -p $registryPassword"