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Desplegar una Aplicación Web Python con Docker y Flask

Tiempo de lectura: < 1 minuto

En este tutorial, aprenderemos a utilizar Docker para desplegar una aplicación web Python básica utilizando el framework Flask. 🐍

Paso 1: Estructura del Proyecto

Crea una nueva carpeta llamada «MiAppFlask» en tu directorio de proyectos y navega hasta ella:

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mkdir ~/proyectos/MiAppFlask
cd ~/proyectos/MiAppFlask
mkdir ~/proyectos/MiAppFlask cd ~/proyectos/MiAppFlask
mkdir ~/proyectos/MiAppFlask
cd ~/proyectos/MiAppFlask

Paso 2: Código de la Aplicación Flask

Crea un archivo llamado app.py con el siguiente código para nuestra aplicación Flask simple:

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from flask import Flask
app = Flask(__name__)
@app.route('/')
def home():
return '¡Hola, Docker y Flask!'
if __name__ == '__main__':
app.run(debug=True, host='0.0.0.0')
from flask import Flask app = Flask(__name__) @app.route('/') def home(): return '¡Hola, Docker y Flask!' if __name__ == '__main__': app.run(debug=True, host='0.0.0.0')
from flask import Flask

app = Flask(__name__)

@app.route('/')
def home():
    return '¡Hola, Docker y Flask!'

if __name__ == '__main__':
    app.run(debug=True, host='0.0.0.0')

Paso 3: Dockerfile

Crea un archivo llamado Dockerfile en la misma carpeta con el siguiente contenido:

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FROM python:3.11-slim
WORKDIR /app
COPY requirements.txt requirements.txt
RUN pip install -r requirements.txt
COPY . .
CMD ["python", "app.py"]
FROM python:3.11-slim WORKDIR /app COPY requirements.txt requirements.txt RUN pip install -r requirements.txt COPY . . CMD ["python", "app.py"]
FROM python:3.11-slim

WORKDIR /app

COPY requirements.txt requirements.txt
RUN pip install -r requirements.txt

COPY . .

CMD ["python", "app.py"]

Paso 4: requirements.txt

Crea un archivo llamado requirements.txt con el siguiente contenido:

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Flask==2.0.1
Flask==2.0.1
Flask==2.0.1

Paso 5: Construir la Imagen Docker

En tu terminal, ejecuta el siguiente comando para construir la imagen Docker:

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docker build -t mi-app-flask .
docker build -t mi-app-flask .
docker build -t mi-app-flask .

Paso 6: Iniciar el Contenedor

Ahora, ejecuta el siguiente comando para iniciar el contenedor:

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docker run -p 5000:5000 -d --name mi-app-container mi-app-flask
docker run -p 5000:5000 -d --name mi-app-container mi-app-flask
docker run -p 5000:5000 -d --name mi-app-container mi-app-flask

Paso 7: Acceder a la Aplicación

Abre tu navegador y visita http://localhost:5000 para ver tu aplicación Flask en acción.

Paso 8: Compartir y Disfrutar

¡Comparte tu éxito en redes sociales! Desafía a otros a seguir este tutorial y desplegar su propia aplicación Flask con Docker.

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