Add option to auto-create admin

Author: c-w

README.md

@@ -130,13 +130,11 @@ Depending on your installation method, there are two options:
 First, run a Docker container:
 
 ```bash
-docker run -d --name doccano -p 8000:8000 chakkiworks/doccano
-```
-
-Then, execute `create-admin.sh` script for creating a superuser.
-
-```bash
-docker exec doccano tools/create-admin.sh "admin" "[email protected]" "password"
+docker run -d --name doccano \
+  -e "ADMIN_USERNAME=admin" \
+  -e "[email protected]" \
+  -e "ADMIN_PASSWORD=password" \
+  -p 8000:8000 chakkiworks/doccano
 ```
 
 **Option2: Running Django development server**

tools/run.sh

@@ -6,4 +6,9 @@ if [[ ! -d "app/staticfiles" ]]; then python app/manage.py collectstatic --noinp
 
 python app/manage.py wait_for_db
 python app/manage.py migrate
+
+if [[ -n "${ADMIN_USERNAME}" ]] && [[ -n "${ADMIN_EMAIL}" ]] && [[ -n "${ADMIN_PASSWORD}" ]]; then
+  python app/manage.py create_admin --noinput --username="${ADMIN_USERNAME}" --email="${ADMIN_EMAIL}" --password="${ADMIN_PASSWORD}"
+fi
+
 gunicorn --bind="0.0.0.0:${PORT:-8000}" --workers="${WORKERS:-1}" --pythonpath=app app.wsgi --timeout 300