added postsql config

Author: coderj001

.github/workflows/django.yml

@@ -3,13 +3,23 @@ name: Django CI
 on:
   push:
     branches: [ master ]
-  pull_request:
-    branches: [ master ]
 
 jobs:
   build:
 
     runs-on: ubuntu-latest
+    services:
+      postgres: # we need a postgres docker image to be booted a side car service to run the tests that needs a db
+        image: postgres
+        env: # the environment variable must match with app/settings.py if block of DATBASES variable otherwise test will fail due to connectivity issue.
+          POSTGRES_USER: postgres
+          POSTGRES_PASSWORD: postgres
+          POSTGRES_DB: github-actions
+        ports:
+          - 5432:5432 # exposing 5432 port for application to use
+        # needed because the postgres container does not provide a healthcheck
+        options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
+        
     strategy:
       max-parallel: 4
       matrix:
@@ -25,6 +35,11 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install -r requirements.txt
+    - name: Lint with flake8
+      run: |
+        pip install flake8
+        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+        flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
     - name: Run Tests
       run: |
         python manage.py test