Function isDockerDaemonRunning

pkg/workflow/docker_validation.go:71–90

isDockerDaemonRunning checks if the Docker daemon is responsive. Uses a short timeout to avoid hanging when Docker is installed but the daemon is stopped. Results are cached via dockerDaemonLoader; the cached value can be overridden by markDockerDaemonUnavailable when a later docker command detects

()

// Results are cached via dockerDaemonLoader; the cached value can be overridden by
// markDockerDaemonUnavailable when a later docker command detects the daemon is unreachable.
func isDockerDaemonRunning() bool {
	available, _ := dockerDaemonLoader.Get(func() (bool, error) {
		dockerValidationLog.Print("Checking if Docker daemon is running")
		ctx, cancel := context.WithTimeout(context.Background(), dockerDaemonCheckTimeout)
		defer cancel()

		cmd := exec.CommandContext(ctx, "docker", "info")
		cmd.Stdout = nil
		cmd.Stderr = nil
		err := cmd.Run()

		if err != nil {
			dockerValidationLog.Printf("Docker daemon not running or not responsive: %v", err)
			return false, nil //nolint:nilerr // intentional: cache false without an error
		}
		dockerValidationLog.Print("Docker daemon is running")
		return true, nil
	})
	return available
}

// markDockerDaemonUnavailable records that the Docker daemon is not reachable.
// Subsequent calls to isDockerDaemonRunning will return false immediately, so