Update the running user as the horovod job user (#7)

* 1. initialize mpijob with the home directory of the jury running user
2. enable 'volume' function to work on all containers (not only 'users')

* Bump version to 0.0.7

v3io_gputils/__init__.py

@@ -1 +1 @@
-__version__ = '0.0.6'
+__version__ = '0.0.7'

v3io_gputils/mpijob.py

@@ -31,7 +31,7 @@
                      'driver': 'v3io/fuse',
                      'options': {
                         'container': 'users',
-                        'subPath': '/iguazio',
+                        'subPath': '',
                         'accessKey': '',
                   }
             }}]
@@ -70,19 +70,23 @@ def __init__(self, name, image=None, command=None,
         if replicas:
             self._struct['spec']['replicas'] = replicas
         self._update_access_token(environ.get('V3IO_ACCESS_KEY',''))
+        self._update_running_user(environ.get('V3IO_USERNAME',''))
 
     def _update_container(self, key, value):
         self._struct['spec']['template']['spec']['containers'][0][key] = value
 
     def _update_access_token(self, token):
         self._struct['spec']['template']['spec']['volumes'][0]['flexVolume']['options']['accessKey'] = token
 
+    def _update_running_user(self, username):
+        self._struct['spec']['template']['spec']['volumes'][0]['flexVolume']['options']['subPath'] = '/' + username
+
     def volume(self, mount='/User', volpath='~/', access_key=''):
         self._update_container('volumeMounts', [{'name': 'v3io', 'mountPath': mount}])
 
         if volpath.startswith('~/'):
-            user = environ.get('V3IO_USERNAME', '')
-            volpath = 'users/' + user + volpath[1:]
+            v3io_home = environ.get('V3IO_HOME', '')
+            volpath = v3io_home + volpath[1:]
 
         container, subpath = split_path(volpath)
         access_key = access_key or environ.get('V3IO_ACCESS_KEY','')