This is a community driven Open Source project, as such it needs support to keep it alive and evolving.
This project is supported by a set of individual companies by providing some specific resources.
Docker is a set of platform as a service (PaaS) products that use OS-level virtualization to deliver software in packages called containers. Containers are isolated from one another and bundle their own software, libraries and configuration files; they can communicate with each other through well-defined channels. Because all of the containers share the services of a single operating system kernel, they use fewer resources than virtual machines.
Docker Hub is the world’s largest repository of container images with an array of content sources including container community developers, open source projects and independent software vendors (ISV) building and distributing their code in containers. Users get access to free public repositories for storing and sharing images or can choose subscription plan for private repos.
Docker provides to this project a user with a higher ‘Docker Hub Rate Limiting’, this helps us to effectively build and test the different deployment use cases that are supported. This means that all container images can be pulled and processed in a streamlined manner.
Google Cloud Platform
Google Cloud Platform is a suite of cloud computing services that runs on the same infrastructure that Google uses internally for its end-user products, such as Google Search, Gmail, Google Drive, and YouTube. Alongside a set of management tools, it provides a series of modular cloud services including computing, data storage, data analytics, machine learning, infrastructure as a service, platform as a service, and serverless computing environments.
Google Cloud Platform provides this project with a higher free tier to serve the CDN storage for the CI periodic and per pull request jobs. This allows the project to successfully store each job execution output for further review and debugging purposes. Also, to host a minimum hosted service to test this software platform.