Use SQLite when testing

.github/workflows/docker.yaml

@@ -11,28 +11,9 @@ jobs:
   test:
     runs-on: ubuntu-latest
     env:
-      DJANGO_SECRET_KEY: 1234567890
       DJANGO_DEBUG: False
-      POSTGRES_DB: ttvdrops_test
-      POSTGRES_USER: ttvdrops_test
-      POSTGRES_PASSWORD: testpass123
-      POSTGRES_HOST: postgres
-      POSTGRES_PORT: 5432
-
-    services:
-      postgres:
-        image: postgres:17
-        env:
-          POSTGRES_DB: ttvdrops_test
-          POSTGRES_USER: ttvdrops_test
-          POSTGRES_PASSWORD: testpass123
-        options: >-
-          --health-cmd pg_isready
-          --health-interval 10s
-          --health-timeout 5s
-          --health-retries 5
-        ports:
-          - 5432:5432
+      DJANGO_SECRET_KEY: 1234567890
+      TESTING: True
 
     steps:
       - uses: docker/login-action@v3