add redis url to env var

docker-compose.yml

@@ -37,6 +37,10 @@ services:
     container_name: "omnivore-redis"
     ports:
       - "6379:6379"
+    healthcheck:
+      test: ["CMD", "redis-cli", "ping"]
+      interval: 15s
+      timeout: 90s
     expose:
       - 6379
 
@@ -66,6 +70,7 @@ services:
       - CLIENT_URL=http://localhost:3000
       - GATEWAY_URL=http://localhost:8080/api
       - CONTENT_FETCH_URL=http://content-fetch:8080/?token=some_token
+      - REDIS_URL=redis://redis:6379
     depends_on:
       migrate:
         condition: service_completed_successfully