Deploy Django app to Azure App Service on Linux using GitHub Actions

This app is based off the official django tutorial. Using GitHub Actions, we can deploy this app directly to App Service after changes are pushed to the repo.

Prerequisites

1. You need an Azure subscription to complete the tutorial. You can create a free account to start with: https://azure.microsoft.com/en-us/free/.

2. You need to create a Python 3.7 Linux Web App.

3. This web app requires a MySQL Server (django.db.backends.mysql) as the backend. You can easily create a Azure Database for MySQL using Azure portal https://ms.portal.azure.com/#create/Microsoft.MySQLServer.

Prep the code

1. Get the source code onto your dev machine:

   git clone https://github.com/JasonFreeberg/Python-GitHub-Action.git

2. Load the local source code repo into VSCode:

   cd Python-GitHub-Action
   code .

3. Create a virtual environment

   # Linux/MacOS:
   python3 -m venv venv
   
   # Windows:
   py -m venv venv

   VSCode will ask "We noticed a new virtual environment has been created. Do you want to select it for the workspace folder?" Accept this prompt for better code completion.

4. Start the virtual environment

   # Linux/MacOS
   source env/bin/activate
   
   # Windows
   .\venv\Scripts\activate

5. Install modules

   pip install -r requirements.txt

6. Set up SQLite database

   python manage.py makemigrations
   python manage.py migrate

7. Start the app locally

   python manage.py runserver

Update database connection strings

The app currently uses a local SQLite database for local dev and test. You can deploy it with this, or wire it up to a proper MySQL database by editing settings.py to include your own database connection strings.

DATABASES = {
    'default': {
            'ENGINE': 'django.db.backends.mysql',
            'NAME': '<database name>',
            'USER': '<database user name>',
            'PASSWORD': 'database password',
            'HOST': 'database host',
    }
}

Deploy the django app to Linux App Service

Finally, get your Publish Profile of your webapp from the Azure Portal and add it as a secret in the GitHub web UI. The secret should be named "PUBLISH_PROFILE", to match the string in the workflow YAML.