A lightweight web service to generate USPS first class mail envelope with a traceable barcode.

1. Generate a ready-to-print envelope pdf and html
2. Support both #10 Envelope and 4in*2in label
3. The envelope has a traceable barcode
4. Show status of your first class mail without certify!

• Move app/config.py.example to app/config.py

• config your USPS Web Tools API username, Business Gateway username and Password Guide

• config a Flask session key

• Config your redis server address

• Modify the docker file to meet your need
  • CMD ["gunicorn", "app:app", "--workers", "4", "--worker-class", "app.ConfigurableWorker", "--bind", "0.0.0.0:8080", "--forwarded-allow-ips",""]
    • Define the path and the port
• docker-compose up -d

• Open http://localhost:8080/envelope/ in your browser