Id is not alway available

README.md

@@ -183,7 +183,7 @@ You have 4 available objects in your templates.
     - List of containers names
       - Names are sorted by length, but container ID will be the last element.
   - `id`
-    - Hexadecimal container ID
+    - Hexadecimal container ID (if available, else empty string)
   - `links`
     - Tuple of `link` object related to this container
 

pyentrypoint/docker_links.py

@@ -74,7 +74,7 @@ class DockerLinks(object):
             names.sort(key=len)
             hexa.sort()
             item["names"] = names
-            item["id"] = hexa
+            item["id"] = hexa[0] if len(hexa) else ''
 
     def links(self, *args):
         "Return dictionnary of links in container"
@@ -103,7 +103,7 @@ class DockerLinks(object):
             ctn.append(Container(ip=ip,
                                  env=item['environment'],
                                  names=item['names'],
-                                 id=item['id'][0],
+                                 id=item['id'],
                                  links=links))
         self._containers = tuple(ctn)
         return self._containers

setup.py

@@ -9,7 +9,7 @@ setup(
 
     name='pyentrypoint',
 
-    version='0.1.17',
+    version='0.1.18',
 
     packages=find_packages(),