Requirements

pip:

• wheel
• gunicorn
• flask

Unit File

[Unit]
Description=Gunicorn instance for primemeat
After=network.target

[Service]
User=maintenance
Group=www-data
WorkingDirectory=/path/to/project
Environment="PATH=/path/to/project/bin"
#remove --reload when site is ready
#reload restarts workers when code changes
ExecStart=/path/to/project/bin/gunicorn --reload --workers 3 --bind 0.0.0.0:8900 wsgi:app

[Install]
WantedBy=multi-user.target

Caddy

primemeat.some.domain.org {
  root * /path/to/project
  reverse_proxy localhost:8900
}