Nginx/Flask/Redis Sample Compose

nginx-flask-redis/docker-compose.yml

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+version: '3.6'
+
+services:
+  redis:
+    image: redislabs/redis
+    ports:
+      - '6379:6379'
+
+  web:
+    build:
+      context: ./web/
+    ports:
+      - "5000:5000"
+    links:
+      - redis
+
+  nginx:
+    restart: always
+    build: ./nginx/
+    ports:
+      - "80:80"
+    links:
+      - web

nginx-flask-redis/nginx/Dockerfile

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+FROM nginx:alpine
+RUN rm /etc/nginx/conf.d/default.conf
+ADD sites-enabled/app /etc/nginx/conf.d/default.conf

nginx-flask-redis/nginx/sites-enabled/app

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+server {
+
+    listen 80;
+    server_name 0.0.0.0;
+    charset utf-8;
+
+    location / {
+        proxy_pass http://web:8000;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    }
+
+}

nginx-flask-redis/web/Dockerfile

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+FROM python
+
+COPY . /
+
+RUN pip install -r requirements.txt && pip install gunicorn
+RUN /usr/local/bin/python -m pip install --upgrade pip
+ENTRYPOINT ["/start.sh"]

nginx-flask-redis/web/app/app.py

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+
+import os
+import socket
+
+from flask import Flask
+from redis import Redis
+
+
+app = Flask(__name__)
+redis = Redis(host=os.environ.get('REDIS_HOST', 'redis'), port=6379)
+
+
+@app.route('/')
+def hello():
+    redis.incr('hits')
+    return 'Hi Docker! You have seen %s times and your system is %s.\n' % (redis.get('hits'),socket.gethostname())

nginx-flask-redis/web/app/config.py

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+# -*- coding: utf-8 -*-
+
+import multiprocessing
+import os
+
+from distutils.util import strtobool
+
+
+bind = os.getenv('WEB_BIND', '0.0.0.0:8000')
+accesslog = '-'
+access_log_format = "%(h)s %(l)s %(u)s %(t)s '%(r)s' %(s)s %(b)s '%(f)s' '%(a)s' in %(D)sµs"  # noqa: E501
+
+workers = int(os.getenv('WEB_CONCURRENCY', multiprocessing.cpu_count() * 2))
+threads = int(os.getenv('PYTHON_MAX_THREADS', 1))
+
+reload = bool(strtobool(os.getenv('WEB_RELOAD', 'false')))

nginx-flask-redis/web/requirements.txt

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+Flask==2.0.3
+redis==4.1.4
+

nginx-flask-redis/web/start.sh

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+#!/bin/bash
+
+gunicorn -c app/config.py app.app:app