Python Web App in a Docker Container (2025 Guide )| Dockerfile Explained | Useful Tips

Hello everyone, and welcome back to KTiPs!

In this video, we’ll guide you through building a Python web application and running it on Ubuntu 22.04 using Docker, all from a Windows 11 environment. We’ll cover creating a Dockerfile, building and running the Docker image, and troubleshooting common issues. This tutorial is perfect for those looking to understand the basics of Docker and containerization.

In this video, you’ll learn:
1. How to create a Dockerfile for a Python Flask application.
2. Building a Docker image from the Dockerfile.
3. Running the Docker container and exposing ports.
4. Troubleshooting common issues during the build and run process.
5. Tips for optimizing Docker images and layers.

Timestamps:
00:00 : Introduction
00:48 : Creating the Python Flask Web Application
03:05 : Creating the Dockerfile and Detailed Explanations on Dockerfiles
06:29 : Building the Docker Image
08:00 : Running the Docker Container
08:50 : Exploring and Removing Docker Images
10:00 : Optimization Tips

🔗🔗🔗 Useful Links 🔗🔗🔗:

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Thanks for watching, and see you in the next one!

#docker #python #flask #vscode

[DebuggingwithKTiPs]

Hello!
I hoppe you enjoy this one too. Bellow is my code:

Dockerfile:

FROM python:3.10-slim
WORKDIR /app
COPY . /app
RUN pip install flask
EXPOSE 5000
CMD ["python", "app.py"]

app.py:
from flask import Flask

app = Flask(__name__)

@app.route('/')
def hello_world():
return 'Hello, KTiPs Community!'

if __name__ == '__main__':
app.run(host='0.0.0.0', port=5000)