fix(core): update

ts/docker.classes.image.ts

@@ -112,14 +112,6 @@ export class DockerImage {
     });
   }
 
-  /**
-   * returns a boolean wether the image has a upstream image
-   */
-  public isUpstreamImage(): boolean {
-    // TODO: implement isUpastreamImage
-    return this.RepoTags.length > 0;
-  }
-
   public tagImage(newTag) {}
 
   /**

ts/docker.classes.service.ts

@@ -56,4 +56,8 @@ export class DockerService {
     this.dockerHost = dockerHostArg;
     Object.assign(this, serviceObject);
   }
+
+  update() {
+    // TODO: implemnt updating service
+  }
 }