docker/docker_client.go
func (c *dockerClient) detectProperties(ctx context.Context) error {
	c.detectPropertiesOnce.Do(func() { c.detectPropertiesError = c.detectPropertiesHelper(ctx) })
	return c.detectPropertiesError
}
func (c *dockerClient) detectProperties(ctx context.Context) error {
	c.detectPropertiesOnce.Do(func() { c.detectPropertiesError = c.detectPropertiesHelper(ctx) })
	return c.detectPropertiesError
}
// detectProperties detects various properties of the registry.
// See the dockerClient documentation for members which are affected by this.