Media root dir: set absolute path

Author: nkiryanov

{{ cookiecutter.name }}/src/app/conf/media.py

@@ -1,5 +1,6 @@
+from app.conf.boilerplate import BASE_DIR
 from app.conf.environ import env
 
 
 MEDIA_URL = "/media/"
-MEDIA_ROOT = env("MEDIA_ROOT", cast=str, default="media")
+MEDIA_ROOT = env.path("MEDIA_ROOT", default=BASE_DIR.parent / "media")