@Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        ContainerHolder that = (ContainerHolder) o;

        if (image != null ? !image.equals(that.image) : that.image != null)
            return false;
        if (url != null ? !url.equals(that.url) : that.url != null) return false;

        return true;
    }