add healthcheck

Author: NelsonDane

docker-compose.yml

@@ -45,6 +45,11 @@ services:
       - ./db:/var/lib/postgresql/data
     ports:
       - 5432:5432
+    healthcheck:
+      test: [ "CMD-SHELL", "pg_isready -d sponsors -U ${POSTGRES_USER}" ]
+      interval: 30s
+      timeout: 10s
+      retries: 5
 
   watchtower:
     image: containrrr/watchtower