Django via Docker
- 1. Django + Docker Super easy setup https://github.com/brendenwest/django-demo
- 2. Installation & Docs - Overview : https://docs.docker.com/engine/understanding-docker/ - Django images: https://hub.docker.com/_/django/ - Django quickstart: https://docs.docker.com/compose/django/ - MySQL images: https://hub.docker.com/r/mysql/mysql-server/
- 3. Terminology Docker containers wrap a piece of software in a complete filesystem that contains everything needed to run: code, runtime, system tools, system libraries – anything that can be installed on a server. - Image - A binary image with stacked read-only layers representing file system differences. - Container - A running instance of a Docker image, with a thin, writable layer for all changes made to the container - such as writing new files, modifying existing files, and deleting files. When the container is deleted the writable layer is also deleted.
- 5. Microservices - Linked Single-purpose Containers Docker Host Django Container DB Container
- 6. Dev Process Overview One time 1. Install virtualbox 2. Install Docker Per Project 1. Create project directory 2. Start docker machine 3. Create Docker image for Django 1 4. Create MySQL docker image 1 5. Create initial Django project 2 6. Update settings.py database config 7. Start Docker container(s) 1 - Can be one-time step if project doesn’t require image customization 2 - if project doesn’t already exist
- 7. Creating a Django image Create the following files: Dockerfile - Django image specifications Requirements.txt - python environment specifications docker-compose.yml (optional) - Django container runtime settings Image can be created via command line or docker-compose.yml: $ docker build -t <IMAGE_NAME> . $ docker-compose up -d
- 8. Creating a DB image Optional - You can use Django image default settings instead DB can be any valid Django data store (SQLite, MySQL, PostgreSQL) DB can be specified in docker-compose.yml, or via dedicated Dockerfile Django container needs to reference ports exposed by DB container DB data storage can be packaged in container or on external ‘volume’
- 9. Useful Docker Commands docker-machine start eval "$(docker-machine env default)" docker-machine ip docker-compose up docker-compose up -d docker ps docker exec -it <container> bash docker start/stop <container>