feature: Support for remote docker host

Author: samadwar

src/sagemaker/local/utils.py

@@ -147,5 +147,5 @@ def get_docker_host():
     if parsed_url.hostname and parsed_url.scheme == "tcp":
         docker_host = parsed_url.hostname
     else:
-        "localhost"
+        docker_host = "localhost"
     return docker_host