Add docker build on CI

Author: Ivaylo-Bachvarov

.github/workflows/django.yml

@@ -1,6 +1,19 @@
 name: Django application
 on: [push]
 jobs:
+  docker_build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Build docker
+      run: docker-compose build
+    - name: Type check
+      run: docker-compose run django mypy styleguide_example/
+    - name: Run migrations
+      run: docker-compose run django python manage.py migrate
+    - name: Run tests
+      run: docker-compose run django py.test
+
   build:
     runs-on: ubuntu-latest
     services:
@@ -32,6 +45,7 @@ jobs:
       run: python manage.py migrate
     - name: Run tests
       run: py.test
+
   deploy_to_heroku:
     runs-on: ubuntu-latest
     needs: build

docker/local.Dockerfile

@@ -1,6 +1,6 @@
 # This docker file is used for local development via docker-compose
 # Creating image based on official python3 image
-FROM python:3.10.2
+FROM python:3.10
 
 # Fix python printing
 ENV PYTHONUNBUFFERED 1

docker/production.Dockerfile

@@ -1,6 +1,6 @@
 # This docker file is used for production
 # Creating image based on official python3 image
-FROM python:3.10.2
+FROM python:3.10
 
 # Installing all python dependencies
 ADD requirements/ requirements/