docker-django-tips-tricks

# https://stackoverflow.com/questions/59568111/how-to-make-docker-build-run-python-manage-py-migrate

# https://www.youtube.com/watch?v=vJAfq6Ku4cI&ab_channel=DotJA   ---> https://github.com/dotja/django-docker-compose/blob/main/docker-compose.yml

First of all you should not run migrations in your custom Dockerfile. A good practice is creating entrypoint.sh.

This is example entrypoint file:

#!/bin/bash

set -e

echo "${0}: running migrations."
python manage.py makemigrations --merge
python manage.py migrate --noinput

echo "${0}: collecting statics."

python manage.py collectstatic --noinput

cp -rv static/* static_shared/

gunicorn yourapp.wsgi:application \
    --env DJANGO_SETTINGS_MODULE=yourapp.production_settings \
    --name yourapp \
    --bind 0.0.0.0:8000 \
    --timeout 600 \
    --workers 4 \
    --log-level=info \
    --reload
Additionally I recommend using docker-compose, which helps to organize your deployment in one place.

Example:

version: '3'
  web:
    build:
      context: .
      dockerfile: Dockerfile
    command:
      - /bin/sh
      - '-c'
      - '/code/entrypoint.sh'
    ports:
      - '8000:8000'
    volumes:
      - '.:/code'
      - 'media_volume:/media'
And example Dockerfile

FROM python:3.6.8

RUN apt-get update;

ENV PYTHONUNBUFFERED 1
RUN mkdir /code

ADD requirements.txt /code
ADD entrypoint.sh /code

WORKDIR /code

RUN chmod +x *.sh

RUN pip install --upgrade pip
RUN pip install -r requirements.txt
ADD . /code