diff --git a/clearml_agent/backend_api/config/default/agent.conf b/clearml_agent/backend_api/config/default/agent.conf
index c21b29e..9238e73 100644
--- a/clearml_agent/backend_api/config/default/agent.conf
+++ b/clearml_agent/backend_api/config/default/agent.conf
@@ -19,6 +19,8 @@
     force_git_ssh_protocol: false
     # Force a specific SSH port when converting http to ssh links (the domain is kept the same)
     # force_git_ssh_port: 0
+    # Force a specific SSH username when converting http to ssh links (the default username is 'git')
+    # force_git_ssh_user: git
 
     # Set the python version to use when creating the virtual environment and launching the experiment
     # Example values: "/usr/bin/python3" or "/usr/local/bin/python3.6"
@@ -131,7 +133,7 @@
 
     default_docker: {
         # default docker image to use when running in docker mode
-        image: "nvidia/cuda:10.1-runtime-ubuntu18.04"
+        image: "nvidia/cuda:10.1-cudnn7-runtime-ubuntu18.04"
 
         # optional arguments to pass to docker image
         # arguments: ["--ipc=host", ]
diff --git a/clearml_agent/helper/repo.py b/clearml_agent/helper/repo.py
index f22233c..5a77075 100644
--- a/clearml_agent/helper/repo.py
+++ b/clearml_agent/helper/repo.py
@@ -254,15 +254,15 @@ class VCS(object):
         return url
 
     @classmethod
-    def replace_http_url(cls, url, port=None):
-        # type: (Text, Optional[int]) -> Text
+    def replace_http_url(cls, url, port=None, username=None):
+        # type: (Text, Optional[int], Optional[str]) -> Text
         """
         Replace HTTPS URL with SSH URL when applicable
         """
         parsed_url = furl(url)
         if parsed_url.scheme == "https":
             parsed_url.scheme = "ssh"
-            parsed_url.username = "git"
+            parsed_url.username = username or "git"
             parsed_url.password = None
             # make sure there is no port in the final url (safe_furl support)
             # the original port was an https port, and we do not know if there is a different ssh port,
@@ -285,7 +285,10 @@ class VCS(object):
                 return
             if parsed_url.scheme == "https":
                 new_url = self.replace_http_url(
-                    self.url, port=self.session.config.get('agent.force_git_ssh_port', None))
+                    self.url,
+                    port=self.session.config.get('agent.force_git_ssh_port', None),
+                    username=self.session.config.get('agent.force_git_ssh_user', None)
+                )
                 if new_url != self.url:
                     print("Using SSH credentials - replacing https url '{}' with ssh url '{}'".format(
                         self.url, new_url))