Many people have the following setup in docker-compose.yml file. version: '3' services: mysql: image: mysql:8.0 app: build: . command: is_read

Many people have the following setup in docker-compose.yml file. version: '3' services: mysql: image: mysql:8.0 app: build: . command: is_ready --timeout 10 --addr mysql:3306 -- <run migrations command> For cases like this, returning 503 every time the database is not ready, is not very convenient.