add postgres to github action

.github/workflows/main.yml

@@ -11,6 +11,33 @@ jobs:
       matrix:
         python-version: [3.7]
 
+    # service containers to run with `postgres-job`
+    services:
+      # label used to access the service container
+      postgres:
+        # Docker Hub image
+        image: postgres:13
+        # service environment variables
+        # `POSTGRES_HOST` is `postgres`
+        env:
+          # optional (defaults to `postgres`)
+          POSTGRES_DB: test
+          # required
+          POSTGRES_PASSWORD: test
+          # optional (defaults to `5432`)
+          POSTGRES_PORT: 5432
+          # optional (defaults to `postgres`)
+          POSTGRES_USER: test
+        ports:
+          # maps tcp port 5432 on service container to the host
+          - 5432:5432
+        # set health checks to wait until postgres has started
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+
     steps:
       - uses: actions/checkout@v2
 

tests/test.env

@@ -16,7 +16,7 @@ DKIM_PRIVATE_KEY_PATH=local_data/dkim.key
 
 # Database
 RESET_DB=true
-DB_URI=postgresql://db/test
+DB_URI=postgresql://test:test@localhost:5432/test
 
 # Flask
 FLASK_SECRET=secret