1.  sudo useradd --system --shell /bin/bash groceries
2.  sudo usermod -aG www-data groceries
3.  id -u groceries
4.  id -g www-data
5.  edit docker-compose.yaml to have correct UID / GID
6.  docker compose build
7.  sudo mkdir -p /var/www/groceries.alaevens.ca/data
8.  sudo cp EXISTING_DB_FILE /var/www/groceries.alaevens.ca/db.sqlite3
9.  sudo chown -R groceries /var/www/groceries.alaevens.ca/
10. sudo chgrp -R www-data /var/www/groceries.alaevens.ca/
11. docker compose up -d