add a temp file to mark the first run

.gitignore

@@ -172,3 +172,4 @@ db.sqlite3
 .vscode/
 .pytest_cache/
 htmlcov/
+.second_run

run.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 cd network_inventory
-if [ -f ./network_inventory/db.sqlite3 ]; then
+if [ -f ./.second_run ]; then
     python manage.py makemigrations
     python manage.py migrate
 else
@@ -8,5 +8,6 @@ else
     python manage.py migrate
     python manage.py loaddata inventory
     python manage.py shell -c "from django.contrib.auth import get_user_model; User = get_user_model(); User.objects.create_superuser('admin', 'admin@example.com', 'password')"
+    touch .second_run
 fi
 python manage.py runserver 0.0.0.0:8000