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Python with Docker

{id: python}

Python CLI in Docker - curl.py

{id: python-cli-in-docker-code}

{aside} This is a command line script, a very basic implementation of curl in Python. In order to run this we need Python and the requests package to be installed. {/aside}

Python CLI in Docker - Dockerfile

{id: python-cli-in-docker-dockerfile}

$ docker build -t mydocker .

$ docker run --rm mydocker https://httpbin.org/get

{aside} This is a simple implementation of a curl-like script in Python. Wrapped in a Docker container. First build the container and then you can run the script. {/aside}

Docker: Python Development mode with mounted directory

{id: docker-development-mode-with-mounted-directory}

$ docker build -t mydocker .

$ docker run --rm -v $(pwd):/opt/ mydocker python /opt/curl.py  https://httpbin.org/get

  • --rm to remove the container when we stopped it.

  • -v $(pwd):/opt/ to map the current directory on the host system to the /opt directory inside the container

  • mydocker is the name of the image

  • After that we can any python program.

  • You can edit the file on your host system (with your IDE) and run it on the command line of the Docker container.

  • This works on Linux and Mac OSX. On Windows you might need to spell out the current working directory yourself.

Flask application

{id: flask-application}

{aside} In this simple Flask web application we have 3 files. app.py, a template, and the requirements.txt {/aside}

Flask development

{id: flask-development}

$ docker build -t mydocker .
$ docker run -it --name dev --rm -p5001:5000 -v $(pwd):/opt/  mydocker

  • -it to be in interactive mode so we can see the log on the command line and we can easily stop the development container.

  • --name dev we set the name of the container to be dev in case we would like to access it.

  • --rm remove the container after it is finished.

  • -p5001:5000 map port 5001 of the host computer to port 5000 of the container.

  • -v $(pwd):/opt/ map the current working directory of the host to /opt in the container.

  • Access via http://localhost:5001/

Docker: Flask + uwsgi

{id: flask-uwsgi}

Flask with Redis

{id: flask-with-redis}

Docker compose Flask and Redis

{id: docker-compose-redis-flask}

pip install docker-compose


docker-compose up

Python Flask and MongoDB

{id: python-flask-mongodb}

Docker Compose Python Flask and MongoDB

{id: docker-compose-python-flask-mongodb}

pip install docker-compose


docker-compose up

Python, Flask and Pulsar

{id: python-flask-and-pulsar}

docker run -it -p 6650:6650 -p 8080:8080  apachepulsar/pulsar:2.4.1 bin/pulsar standalone
docker build -t mydocker .
docker run --rm -it mydocker bash

Python and Pulsar

{id: python-and-pulsar}

Run:

docker-compose up

and then check the pulsar.log file

Docker: Flask + uwsgi + nginx

{id: flask-uwsgi-nginx}

Using https://hub.docker.com/r/tiangolo/uwsgi-nginx-flask/

docker build -t myapp .
docker run -it --rm -p5001:80 myapp