create dockerfile with following content 

  # 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-headers
COPY requirements.txt requirements.txt
RUN pip install -r requirements.txt
EXPOSE 5000
COPY . .
CMD ["flask", "run"]

create app.py with following content 

  import time

import redis
from flask import Flask

app = Flask(__name__)
cache = redis.Redis(host='redis', port=6379)

def get_hit_count():
    retries = 5
    while True:
        try:
            return cache.incr('hits')
        except redis.exceptions.ConnectionError as exc:
            if retries == 0:
                raise exc
            retries -= 1
            time.sleep(0.5)

@app.route('/')
def hello():
    count = get_hit_count()
    return 'Hello World! I have been seen {} times.\n'.format(count)

create requirements.txt fil with following content 

  flask
redis

create docker-compose.yml with following content 

  version: "3.9"
services:
  web:
    build: .
    ports:
      - "8000:5000"
  redis:
    image: "redis:alpine"

docker compose config 

  7-DC-CLI git:(main) ✗ docker compose config 
name: 7-dc-cli
services:
  redis:
    image: redis:alpine
    networks:
      default: null
  web:
    build:
      context: /Users/sangambiradar/Documents/GitHub/dockerworkshop/workshop/Docker102/Docker-Compose/7-DC-CLI
      dockerfile: Dockerfile
    networks:
      default: null
    ports:
    - mode: ingress
      target: 5000
      published: "8000"
      protocol: tcp
networks:
  default:
    name: 7-dc-cli_default
Edit this page

Last updated 03 Jun 2024, 13:43 +0530 . history