Add postgres healthcheck

docker-compose.yml

@@ -10,6 +10,11 @@ services:
       - ./data/postgres:/var/lib/postgresql/data/
       - ./data/progs:/progs
     restart: always
+    healthcheck:
+      test: pg_isready -U gitea -d giteadb
+      interval: 10s
+      timeout: 5s
+      retries: 5
 
   gitea:
     image: gitea/gitea:1