Add redis service for github workflow - will it work first try?

.github/workflows/elixir.yml

@@ -13,6 +13,8 @@ on:
 env:
   MIX_ENV: test
   NODE_ID: aUniqueString
+  REDIS_HOST: redis
+  REDIS_PORT: 6379
 
 jobs:
   test:
@@ -20,6 +22,17 @@ jobs:
     # use Postgres. This creates a database for running tests.
     # Additional services can be defined here if required.
     services:
+      # Label used to access the service container
+      redis:
+        # Docker Hub image
+        image: redis
+        # Set health checks to wait until redis has started
+        options: >-
+          --health-cmd "redis-cli ping"
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+
       db:
         image: postgres:14
         ports: ['5432:5432']