Dongwei jackblack369

Docker Hub 镜像加速器

国内从 Docker Hub 拉取镜像有时会遇到困难，此时可以配置镜像加速器。

Dockerized 实践 https://github.com/y0ngb1n/dockerized

	------------------ Pre Java 8 ---------------------
	Map<Employee, File> fileMap = new HashMap<Employee, File>();
	int i =0;
	for (Map.Entry<Employee, File> entry : map.entrySet()) {
	i++;
	// do something with i
	}

	------------------ Java 8 Lambda ---------------------
	AtomicInteger counter = new AtomicInteger(0);