什么是Docker？
Docker官网是这么描述的：WHAT IS DOCKER? Docker is the world’s leading software containerization platform. Docker is the company driving the container movement and the only container platform provider to address every application across the hybrid cloud. Today’s businesses are under pressure to digitally transform but are constrained by existing applications and infrastructure while rationalizing an increasingly diverse portfolio of clouds, data centers and application architectures. Docker enables true independence between applications and infrastructure and developers and IT ops to unlock their potential and creates a model for better collaboration and innovation.Docker官网是这么描述的：WHAT IS DOCKER? Doc
