Code 401 Class 29(But really Reading 31) Reading Notes

Beginner’s Guide to Docker

With Docker, you can have an entire development environment isolated: programming languages, software packages, databases, and more.

Docker is Linux containers, which are a type of virtualization.

Upside, everyone on the same virtual machine
Downside, size and speed
Create an isolated box for individual projects, so one can use Python 2.7 and Django 1.5 while another can use Python 3.5 and Django 2.1 on the same computer.
docker container ls: only running containers will appear.
Dockerfile is like a recipe for a cake
image is a snapshot of the recipe at a given time
docker-compose.yml says how to make the cake
container is the actual, baked cake
Dockerfiles are read from top to bottom
- FROM must be the first instruction which lets us import a base image to use for our image.

To build containers, install [Pipenv](https://djangoforbeginners.com/initial-setup/)

mkdir djangoapp && cd djangoapp
pipenv install django==3.0
pipenv shell
Docker is a way to run Linux containers
Containers are a lightweight alternative to Virtual Machines
Dockerfile is a list of instructions for creating an image
Images are made up of one ore more layers
Containers are running instance of an image
docker-compose.yml controls how to run the container
Containers are stateless and ephemeral in nature. We can link the local filesustem via volumesbut things become more complex with databases.

__init__.py indicates that the files in the folder are part of a Python package. Without this file, we cannot import files from another directory
asgi.py allows for an optional Asynchronous Server Gateway Interface to be run
settings.py controls our Django project’s overall settings
urls.py tells Django which pages to build in response to a browser or URL request
wsgi.py stand for Web Server Gateway Interface which helps Django serve our eventual web pages.

How do you have auto template support when creating Django files?