Docker is primarily used for Linux and executes operating-system-level virtualization, which is also termed as containerization. Docker makes use of the resource isolation features of Kernel to allow independent ‘containers’ to perform within a single Linux instance, which helps avoid the overhead of running Virtual Machines. The popularity of Docker can be comprehended from the fact that more than 3 million applications have been positioned in containers using the technology and over 35 billion containerized applications have been downloaded.
A good understanding of Linux Kernel’s features will be helpful for learning Docker. These features include resource allocation, memory management, store organization and program communication. This is because the main purpose of Docker is to manage several features of the Kernel, including Cgroups, Namespaces, Copy-on-Write and bind mounting. Further, a basic understanding of networking concepts such as socket, routing, IP protocol, iptables, and server/client architecture will also be helpful. There are a few Docker tutorials available which will guide you through these concepts in an easy to understand method.
Docker offers a lightweight virtualization with negligible overhead. This has some serious advantages as one can profit from an additional layer of abstraction offered by the program, without any worry of overhead. Furthermore, Docker can accomplish container bring up and bring down in a matter of seconds, which is highly impactful in the long run. It also has built-in version tracking and support for automatic control builds, adding to its accessibility.
You can learn Docker using the best Docker tutorials available on Hackr.io, which include both free and paid tutorials. There also exist diverse courses in Docker programming on the basis of the skill level of the users, where both beginners and experts can opt-in for a course matching their skill set. All the courses available on the platform are submitted and voted by the community members, which makes it learner-friendly. Follow Docker Tutorials and Courses on Hackr.io and stay informed on the latest news, insights, tips, and tricks.