Create a Flask app (app.py) responding a Twilio message from GET requests on the /sms endpoint:
import os
from flask import Flask, request
from twilio.twiml.messaging_response import MessagingResponse
app = Flask(__name__)
@app.route('/sms', methods=['GET'])
def sms_reply():
body = request.values.get('Body', '-')
resp = MessagingResponse()
resp.message(f'The Knative copy cat says: {body}')
return str(resp)
if __name__ == '__main__':
app.run(debug=True, host='0.0.0.0', port=int(os.environ.get('PORT', 8080)))Create a Dockerfile for the image:
FROM python:3.7-slim
RUN pip install Flask gunicorn twilio
WORKDIR /app
COPY . .
CMD exec gunicorn --bind :$PORT --workers 1 --threads 8 app:appNote: The twilio client library is used in addition to Flask & gunicorn.