Chapter 9: Container Virtualization in Azure

1. Many similar applications with the same needs, such as OS dependencies and software installed. On top of that, you need availability and scalability.
2. Exactly the opposite. If there are many different workloads, it's often not worth the effort. Another reason is security: containers are much harder to protect.
3. In general, a virtual machine is the solution here, but LXC is a very usable solution. It's somewhere between a virtual machine and a container in terms of creating and managing it.
4. Tools such as Buildah make it possible to create virtual machines that can be used in every solution. Rkt also supports the Docker format. The Open Container Initiative is working very hard to create standards to make it even easier. 
5. Development can be pretty expensive if you do everything in the cloud. Developing locally and then pushing to a remote environment is a very good solution. 
6. It's container-platform-agnostic, and the acbuild tool for Rkt is not maintained any longer. In the opinion of the author, it's easier to use than other tools and you don't need a Docker daemon running. 
7. It makes availability and scalability almost impossible. Besides that, containers are not always easy to back up.