What is "wercker"

Wercker is a Dutch software company with its namesake Docker-based continuous delivery platform that helps software developers build and deploy their applications and microservices. Using its command-line interface, developers can create Docker containers on their desktop, automate their build and deploy processes and then deploy them to various cloud platforms, ranging from Heroku to AWS and Rackspace. The company, with offices in Amsterdam and San Francisco, has open-sourced its command-line interface.