Copy requirements.txt and install the Python dependencies.Set environment variables used by the flask command.Build an image starting with the Python 3.7 image.# syntax=docker/dockerfile:1 FROM python:3.7-alpine WORKDIR /code ENV FLASK_APP=app.py ENV FLASK_RUN_HOST=0.0.0.0 RUN apk add -no-cache gcc musl-dev linux-headersĬOPY requirements.txt requirements.txt RUN pip install -r requirements.txtĮXPOSE 5000 COPY. In aĬluster, this also helps handling momentary connection drops betweenĬreate another file called requirements.txt in your project directory and Service needs to be restarted anytime during the app’s lifetime. Online, but also makes our application more resilient if the Redis This is useful at startup while the application comes Loop lets us attempt our request multiple times if the redis service is Note the way the get_hit_count function is written. In this example, redis is the hostname of the redis container on theĪpplication’s network. sleep ( 0.5 ) ( '/' ) def hello (): count = get_hit_count () return 'Hello World! I have been seen times. ConnectionError as exc : if retries = 0 : raise exc retries -= 1 time. Redis ( host = 'redis', port = 6379 ) def get_hit_count (): retries = 5 while True : try : return cache. Import time import redis from flask import Flask app = Flask ( _name_ ) cache = redis.
