Add container attribute to Container provider

src/dependency_injector/containers.c

@@ -952,12 +952,12 @@ struct __pyx_obj_19dependency_injector_9providers_DependenciesContainer {
  * 
  * 
  * cdef class Container(DependenciesContainer):             # <<<<<<<<<<<<<<
- *     cpdef object container
+ *     cdef object __container
  * 
  */
 struct __pyx_obj_19dependency_injector_9providers_Container {
   struct __pyx_obj_19dependency_injector_9providers_DependenciesContainer __pyx_base;
-  PyObject *container;
+  PyObject *__pyx___container;
 };
 
 
@@ -1510,7 +1510,7 @@ static struct __pyx_vtabstruct_19dependency_injector_9providers_DependenciesCont
  * 
  * 
  * cdef class Container(DependenciesContainer):             # <<<<<<<<<<<<<<
- *     cpdef object container
+ *     cdef object __container
  * 
  */
 

src/dependency_injector/providers.pxd

@@ -42,7 +42,7 @@ cdef class DependenciesContainer(Object):
 
 
 cdef class Container(DependenciesContainer):
-    cpdef object container
+    cdef object __container
 
 
 cdef class OverridingContext(object):

src/dependency_injector/providers.pyx

@@ -609,9 +609,13 @@ cdef class DependenciesContainer(Object):
 cdef class Container(DependenciesContainer):
 
     def __init__(self, object container):
-        self.container = container
+        self.__container = container
         super().__init__()
 
+    @property
+    def container(self):
+        return self.__container
+
     def __deepcopy__(self, memo):
         """Create and return full copy of provider."""
         cdef DependenciesContainer copied
@@ -620,7 +624,7 @@ cdef class Container(DependenciesContainer):
         if copied is not None:
             return copied
 
-        copied = self.__class__(self.container)
+        copied = self.__class__(self.__container)
         copied.__provides = deepcopy(self.__provides, memo)
         copied.__providers = deepcopy(self.__providers, memo)