Update compose django, Fixed #405

Signed-off-by: Kang HuaiShuai <khs1994@khs1994.com>

compose/demo/django/.gitignore

@@ -1 +1,2 @@
 django_example
+manage.py

compose/demo/django/docker-compose.yml

@@ -6,7 +6,7 @@ services:
 
   web:
     build: .
-    command: python3 manage.py runserver 0.0.0.0:8000
+    command: python manage.py runserver 0.0.0.0:8000
     volumes:
       - .:/code
     ports:

compose/demo/django/manage.py

@@ -1,22 +0,0 @@
-#!/usr/bin/env python
-import os
-import sys
-
-if __name__ == "__main__":
-    os.environ.setdefault("DJANGO_SETTINGS_MODULE", "django_example.settings")
-    try:
-        from django.core.management import execute_from_command_line
-    except ImportError:
-        # The above import may fail for some other reason. Ensure that the
-        # issue is really that Django is missing to avoid masking other
-        # exceptions on Python 2.
-        try:
-            import django
-        except ImportError:
-            raise ImportError(
-                "Couldn't import Django. Are you sure it's installed and "
-                "available on your PYTHONPATH environment variable? Did you "
-                "forget to activate a virtual environment?"
-            )
-        raise
-    execute_from_command_line(sys.argv)

compose/demo/django/requirements.txt

@@ -1,2 +1,2 @@
-Django>=1.8,<2.0
-psycopg2
+Django>=2.0,<3.0
+psycopg2>=2.7,<3.0