Add DEVELOPMENT.md to list common development commands

Update `./manage.py` to find application folder in `src/` instead of
expecting a toplevel `nsupdate` folder.

DEVELOPMENT.md

@@ -0,0 +1,12 @@
+# Build locally
+
+1. Install `build` (see [docs](https://packaging.python.org/en/latest/tutorials/packaging-projects/#generating-distribution-archives) for example via `pacman -S python-build` on ArchLinux
+2. Afterwards run the command to generate pip packgases in `dist/`: `pyproject-build`
+
+NOTE: This is also needed before development because the command generates `./src/nsupdate/_version.py`.
+
+# Run locally
+
+1. Create database using `python ./manage.py migrate`
+2. Create a superuser with `python ./manage.py createsuperuser`
+2. Run the server with `python ./manage.py runserver`

manage.py

@@ -4,6 +4,9 @@ import sys
 
 
 if __name__ == "__main__":
+    PROJECT_ROOT = os.path.dirname(__file__)
+    sys.path.insert(0, os.path.join(PROJECT_ROOT, 'src'))
+
     os.environ.setdefault("DJANGO_SETTINGS_MODULE", "nsupdate.settings.dev")
     from django.core.management import execute_from_command_line
     execute_from_command_line(sys.argv)