Added Resources for Containers (#2466)

content/roadmaps/114-software-architect/content/115-operations-knowledge/106-containers.md

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 # Containers
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+Containers are a construct in which [cgroups](https://en.wikipedia.org/wiki/Cgroups), [namespaces](https://en.wikipedia.org/wiki/Linux_namespaces), and [chroot](https://en.wikipedia.org/wiki/Chroot) are used to fully encapsulate and isolate a process.  This encapsulated process, called a container image, shares the kernel of the host with other containers, allowing containers to be significantly smaller and faster than virtual machines.
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+These images are designed for portability, allowing for full local testing of a static image, and easy deployment to a container management platform.
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+<ResourceGroupTitle>Free Content</ResourceGroupTitle>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://cloud.google.com/learn/what-are-containers'>What are Containers?</BadgeLink>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://www.docker.com/resources/what-container/'>What is a Container?</BadgeLink>
+<BadgeLink badgeText='Watch' href='https://www.youtube.com/playlist?list=PLawsLZMfND4nz-WDBZIj8-nbzGFD4S9oz'>What are Containers?</BadgeLink>
+<BadgeLink colorScheme='yellow' badgeText='Read' href='https://thenewstack.io/category/containers/'>Articles about Containers - The New Stack</BadgeLink>