docker compose healthcheck

docker-compose.yml

version: Compose specification
services:
    proxy:
        image: nginx
        container_name: nginx
        restart: always
        ports:
            - "8080:80"
        healthcheck:
            # 1. if curl or wget is not available, maybe try this
            # https://github.com/dart-lang/dart-docker/issues/58#issuecomment-1410663799
            # 2. maybe you can implement a custom healthcheck based on your project language(Golang, Python, etc.)
            # 3. The following two ways are both ok, but you must ensure the command curl is installed
            #test: curl -f http://proxy:8080 || exit 1
            test: ["CMD", "curl", "-f", "http://proxy:8080"]
            interval: 5s
            timeout: 5s
            retries: 6
            start_period: 20s