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Hey Reader,
I'm basically about 90% focused on Magento, but there are also some other things that I love to learn, teach, and talk about, including PHP, Docker, and other parts of the LAMP stack.
This week, we're talking about the whale! ๐ณ
Here are a few things you may not know about Docker (and Magento), like how you can build your own custom image, how you can more easily debug Magento within a Docker container, and maybe a few other things you didn't know โ like how it actually isn't required to have Docker to run containers ๐ฎ
Also, now that I think we've pegged the format of this M Bytes newsletter, please take the quick poll at the bottom of this email to confirm the level of frequency that works best for you. I want to make sure everything aligns with your ideal approach to learning.
Keep coding,
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Write a Dockerfile for a custom Docker image
Want to know how to create your own custom Docker images? It's really not that hard! It all starts with a simple text file called a Dockerfile, which allows you to write the instructions for your image.
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Easily debug Magento in Docker with Spatie's Ray
If you are sick of using \Psr\Log\LoggerInterface, dd, or Xdebug to debug data in Magento, here's an alternate option. With a single line of code, you can pass data to an external program called Ray.
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Configure PHP Mess Detector for Magento
If you are having a hard time maintaining a consistent level of code quality in your Magento code, PHPMD can definitely help you out. It flags potential bugs, sub-optimal code, over complicated expressions, and cyclomatic complexity โ before it's pushed to prod.
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Did you know that containers can run without Docker?
The Docker Engine is really just an abstraction of containerd. It provides you with the GUI, CLI, and other features like Docker Compose, networking, and managing volumes.
Going down a level, containerd is a daemon that manages the lifecycle of a container, things like create, start, stop and pause. You can think of it as an intermediary between the Docker Engine and the runtime. When Docker Engine isn't involved, you'll interact directly with containerd.
But containerd is another abstraction layer โ this time of runc. This is the lowest-level component that actually does the work of creating containers, and it does so by interfacing directly with the Linux kernel.
Each layer abstracts away an additional level of complexity, making things simpler, while also adding in some extra features.
The final piece โ the container โ is an isolated Linux process. It has its own filesystem, network, and resource capabilities. This really has no dependency upon Docker, allowing you to run containers with different methods.
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Thank you for being a University student ๐งก
Did you miss my Magento + Xdebug workshop at Meet Magento Florida?
If so... don't worry โ I streamlined and re-recorded this 90-minute workshop and uploaded it to Campus, which you can access at any time with your University enrollment.
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