Add example

examples/wiring/example_container.py

@@ -0,0 +1,28 @@
+"""Wiring container injection example."""
+
+import sys
+
+from dependency_injector import containers, providers
+from dependency_injector.wiring import inject, Provide
+
+
+class Service:
+    ...
+
+
+class Container(containers.DeclarativeContainer):
+
+    service = providers.Factory(Service)
+
+
+@inject
+def main(container: Container = Provide[Container]):
+    service = container.service()
+    ...
+
+
+if __name__ == '__main__':
+    container = Container()
+    container.wire(modules=[sys.modules[__name__]])
+
+    main()