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Docker

Docker#

To deploy a Docker-based web application in Ploomber Cloud you need:

Dockerfile#

You need to provide a Dockerfile, you can use this flask-based template to get started.

For a successful deployment, you app must run in port 80.

Here’s an example using flask:

FROM python:3.11

COPY app.py app.py
RUN pip install flask gunicorn

ENTRYPOINT ["gunicorn", "app:app", "run", "--bind", "0.0.0.0:80"]

Once you have all your files, .zip them. For example, a simple app will contain two files:

  • Dockerfile

  • app.py

Testing locally#

To test your app, you can use docker locally:

# build the docker image
docker build . -t myapp

# run it
docker run -p 5000:80 myapp

Now, open http://0.0.0.0:5000/ to see your app.

Deploy#

To deploy the app from the deployment menu, follow these instructions:

Tip

To ensure your app doesn’t break on re-deployments, pin your dependencies.

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