Configuración Python

Configuración para Flask, Django y FastAPI.

1. Preparar Proyecto

cd /root
git clone git@github.com:tu-usuario/proyecto-python.git
cd proyecto-python

2. requirements.txt

Flask

Flask==3.0.0
gunicorn==21.2.0
python-dotenv==1.0.0

Django

Django==5.0.0
gunicorn==21.2.0
psycopg2-binary==2.9.9
django-environ==0.11.2

FastAPI

fastapi==0.109.0
uvicorn[standard]==0.27.0
pydantic==2.5.0
python-multipart==0.0.6

3. Dockerfile para Flask/Django

FROM python:3.11-slim

WORKDIR /app

# Dependencias del sistema
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc \
    postgresql-client \
    && rm -rf /var/lib/apt/lists/*

# Dependencias Python
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Código de aplicación
COPY . .

# Usuario no root
RUN useradd -m -u 1000 appuser && chown -R appuser:appuser /app
USER appuser

EXPOSE 8000

# Flask
CMD ["gunicorn", "--bind", "0.0.0.0:8000", "--workers", "4", "app:app"]

# Django
# CMD ["gunicorn", "--bind", "0.0.0.0:8000", "--workers", "4", "config.wsgi:application"]

4. Dockerfile para FastAPI

FROM python:3.11-slim

WORKDIR /app

COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

COPY . .

RUN useradd -m -u 1000 appuser && chown -R appuser:appuser /app
USER appuser

EXPOSE 8000
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "4"]

5. .dockerignore

.git
.env
__pycache__
*.pyc
*.pyo
*.pyd
.Python
venv/
env/
.venv/
db.sqlite3

6. Estructura Flask

app.py

from flask import Flask

app = Flask(__name__)

@app.route('/')
def hello():
    return {'message': 'Hello from Flask!'}

if __name__ == '__main__':
    app.run()

7. Estructura Django

Archivo config/settings.py debe tener:

import environ

env = environ.Env()

ALLOWED_HOSTS = env.list('ALLOWED_HOSTS', default=['*'])
DEBUG = env.bool('DEBUG', default=False)

DATABASES = {
    'default': env.db('DATABASE_URL', default='sqlite:///db.sqlite3')
}

8. Estructura FastAPI

main.py

from fastapi import FastAPI

app = FastAPI()

@app.get("/")
def read_root():
    return {"message": "Hello from FastAPI!"}