Docker to the Raspberry Pi: 5 Significant Benefits
Raspberry Pi and Docker have been around for a while, and web and software developers all around the world have already been utilizing the single-board computer, for example, to work with the Internet of Things (IoT).
What is Docker?
Docker, in a nutshell, facilitates the packaging, distribution, installation, and execution of complex programs such as code, entire file systems, system tools, services, and libraries. Docker refers to these packages as containers.
Want to learn more about Docker? Click here.
What is Raspberry Pi?
The tiny single-board Raspberry Pi is useful for more than simply learning about hardware and programming.
The official operating system Raspberry Pi OS, which is an adaptation of the Linux distribution Debian, is used by the majority of Raspberry Pis. Docker has been successfully used in numerous settings on Linux, so utilizing it with the Raspberry Pi should be no problem.
Want to learn more about Raspberry Pi? Click here.
Docker Running on the Raspberry Pi
Docker is really built on a x64 system, which is found on the majority of current computers.
The Raspberry Pi, on the other hand, employs ARM technology, which means that standard Docker images will not work with the Pi instance. However, a growing number of pre-made containers for Raspberry Pi are also available.
OBS. It is critical to only download pre-made containers from reliable sources to minimize excessive security concerns.
Even if there haven't been many possibilities, you can still take full use of the system by creating your own containers.
5 Significant Benefits of Docker on Raspberry Pi
Raspberry Pi is reasonably simple to configure if you are familiar with computer hardware and Linux.
The tiny computer can be employed for experimentation and Docker is the same way. That is because the containers are self-contained, they cannot harm the whole system.
Redeployment of dependencies without reinstalling the operating system.
Docker enables the deployment of apps with all their dependencies etc., without the requirement for an OS reinstall. It also allows you to undo a messed-up upgrade. This is critical for embedded devices and apps that may require redeployment on occasion, as OS redeploys may block a device that is installed in an inflexible location.
Delivering container diff to the device.
Docker allows you to communicate container diffs across the network, which saves a lot of bandwidth and is especially useful for embedded devices, which are frequently poorly connected.
Note: The docker diff tool may be used to investigate changes made to files or directories on a container's filesystem.
Consider gadgets linked through 3G or unreliable/expensive WiFi, but it is not only a matter of money. A little update has a far better chance of even making it through the pipes to begin with and arrives sooner for a poorly connected device.
You could, of course, transmit diffs over the internet without Docker, but you'd have to recreate part of Docker's capabilities. Importantly, Docker can do diffs in a way that prevents bricking, which is not easy to accomplish properly.
Another advantage is that you may run various capabilities on the device in isolated containers so that none of them interact with each other. These capabilities can be pre-packaged without worry if appropriately done.
One may imagine an ecosystem of Docker files sprouting up, each one providing a new functionality to the Pi.
Applicable to any application.
For example, any application that requires distributing to several devices, particularly if it has native dependencies, would benefit from the Docker and Pi combination.
People have already done some amazing things with their Raspberry Pi gadgets. See here.
The Pi is rather sluggish in comparison to the average x86 device (the world's most popular hardware platform for laptops, desktops, and servers), and Docker is slightly more costly computationally.
Docker has the advantage of not being a virtual machine (VM). As a result, the Pi's overhead should be negligible.