Скачать или смотреть Deploy a Simple Flask App with Docker | Python 3.9 Alpine

Learn how to create and containerize a basic Flask web application using Docker and Python 3.9 (Alpine). In this tutorial, we walk through writing a simple Flask backend, creating a secure Dockerfile, and running the app inside a container.

✅ What you'll learn:

How to build a minimal Flask app

Writing a lightweight and secure Dockerfile

Running your app using a non-root user

Exposing the app on port 5000

🛠️ Tech Stack:

Python 3.9 (Alpine)

Flask

Docker

📁 Source Code:

python
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app.py
from flask import Flask

app = Flask(__name__)

@app.route('/')
def home():
return "This is backend"

if _name_ == '__main__':
app.run(host='0.0.0.0', port=5000)
dockerfile
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Dockerfile
FROM python:3.9-alpine
RUN adduser -D -u 8899 myuser
WORKDIR /app
COPY app.py .
RUN pip install flask
USER 8899
CMD ["python", "app.py"]
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#Flask #Docker #Python #BackendDevelopment #WebApp #DevOps

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