The Docker installation command is: sudo apt install docker.io If the kernel doesn’t upgrade, you’re good to install Docker (without having to reboot). If the kernel upgrades, you’ll want to reboot the server with the command: sudo reboot

Once that completes, upgrade with the command: sudo apt upgrade To update apt, issue the command: sudo apt update Thus, you might want to plan to do this during a time when a server reboot is acceptable. Do note, if your server’s kernel upgrades, you’ll need to reboot the system.

Before you run the installation command, make sure to update apt and then run any necessary upgrades. Since Ubuntu Server 16.04 is sans GUI, the installation and usage of Docker will be handled entirely through the command line. I will assume you already have Ubuntu Server 16.04 up and running and ready to go. I’ll be demonstrating on the Ubuntu 16.04 Server platform, but the process is very similar on most all Linux distributions. I’m going to demonstrate how easy it is to install Docker on Linux, as well as walking you through the first steps of working with Docker. What’s best is that installing and using Docker is second-nature to the Linux platform. Unlike doing this with Virtual Machines, containers will not put nearly the hit on your system resources.ĭocker makes creating, deploying, and managing containers incredibly simple. For example, you can quickly deploy multiple instances of NGINX (even with multiple stagings - such as development and production). And that is the biggest difference between a container and a virtual machine whereas a virtual machine is a full-blown operating system platform, running on a host OS, a container is not.Ĭontainers allow you to expand your company offerings (either internal or external) in ways you could not otherwise. Each container is deployed with its own CPU, memory, block I/O, and network resources, all without having to depend upon an individual kernel and operating system. Containers are lightweight, standalone packages that contain everything needed to run an application (code, libraries, runtime, system settings, and dependencies). Containers are all the rage in IT - with good reason.

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