depends_on in a Docker Compose file?depends_on defines the order in which services start. It ensures that a service starts only after the services it depends on have started.
depends_on guarantee that a service is ready to use before starting the dependent service?No. depends_on only controls start order, not readiness. Services might start but not be fully ready.
web service depends on db service in Docker Compose?depends_on in Docker Compose?By default, depends_on does not wait for services to be "ready". It only waits for containers to start. (In v2.1+, use condition: service_healthy to wait for healthchecks.)
depends_on does not check readiness?You can use healthchecks and scripts that wait for a service to be ready before starting the dependent service.
depends_on control in Docker Compose?depends_on controls the order in which services start.
depends_on wait for a service to be fully ready before starting another service?depends_on only waits for containers to start, not for readiness.
app depends on service db?The correct syntax is depends_on: followed by a list with - db.
depends_on conditions (like service_healthy) regarding service readiness?Version 2 (specifically 2.1) introduced condition: service_healthy to wait for readiness via healthchecks.
Healthchecks and wait scripts help ensure readiness before starting dependent services.
depends_on works in Docker Compose and its limitations.