Python Dockerfile

2019-11-15

Dockerfile to run a python Flask app.

Assume the application is in main.py file,
Flask app has been instantiated on a variable called app using something similar to:

load Flask into app variableMinimal application

from flask import Flask
app = Flask(__name__)

@app.route("/")
def hello_world():
    return "<p>Hello, World!</p>"

The following Dockerfile runs a Flask appplication on a uwsgi server.

DockerfileDockerfile Reference

FROM python:3.6.5

RUN pip3 install flask pymongo pyyaml
RUN CFLAGS="-I/usr/local/opt/openssl/include" \
LDFLAGS="-L/usr/local/opt/openssl/lib" \
UWSGI_PROFILE_OVERRIDE=ssl=true \
pip3 install uwsgi -I --no-cache-dir

ENV DB_HOST=${MONGO_HOST}
ENV DB_PORT=${MONGO_PORT}
ENV CLIENT_CORS=${CLIENT_CORS}

RUN mkdir /code
COPY main.py /code
WORKDIR /code

ENV DB_HOST=${DB_HOST:-127.0.0.1} 
ENV DB_PORT=${DB_PORT:-27017}
ENV CLIENT_CORS=${CLIENT_CORS:-http://localhost:3000}

CMD uwsgi -w main:app \
--http11-socket 0.0.0.0:5000 \
--enable-threads \
--threads 4 \
--log-x-forwarded-for \
--logformat '%(addr) - %(user) [%(ltime)] "%(method) %(uri) %(proto)" %(status) %(size) "%(referer)" "%(uagent)"'

Dockerfile for a Socket.io application

If you would like to run a Socket.io Python application with Docker, check the code of the following Dockerfile.

Code

Python Dockerfile

Dockerfile for a Socket.io application