As companies strive to attain achieve software development agility, they are looking to automate each phase of their software development pipeline. The ultimate goal is to fully automate the deployment of code to production, triggered when a developer checks in a fix or a feature. Companies such as Netflix have built extensive tooling to enable their developers to achieve this level of sophisticated automation [1]. In this post, I will describe how deployments of containerized applications can be completely automated with GitHub, Docker Hub and Nirmata.
An exciting thing about Docker is the number of interesting use cases that emerge as developers adopt containers in their application development and operations processes.
The default networking mode in Docker (as of Release 1.5) is the bridge mode. The bridge mode setting creates a virtual Ethernet bridge device on the Linux host that enables containers to talk to each other, and the host. Docker’s port mappings can then be used to manage external traffic, from the host interface to containers.