To run Docker containers on Mac, you can choose between Docker for Mac (closed-source), Rancher Desktop (OSS), and Colima (OSS).They all come with issues, and VirtioFS is the most promising one. As Docker runs in a virtual machine, something to share the host filesystem with the VM is required we can choose between OSXFS (proprietary and deprecated), gRCP FUSE, or VirtioFS.Docker-cli and docker-compose are native binaries. Docker containers are still Linux processes and need a Virtual Machine to run on other operating systems.It is interesting to see that the consensus around VirtioFS is confirmed, and once again, open source sets the rules. They both use Lima, filesystem-sharing issues are tracked here, and VirtioFS has just landed. It is a closed-source product, and if conditions matches require a paid subscription (at the time of writing: “Companies with more than 250 employees OR more than $10 million in annual revenue”).Since it is slow for most of the use cases where tons and tons of files are involved (yes, I am looking at you, Node, and PHP), a new player is slowly ramping up from the labs I am talking about VirtioFS – which seems very promising. Filesystem sharing is implemented on a proprietary technology called OSXFS.Docker for Mac runs in a LinuxKit VM and recently switched to the Virtualization Framework instead of HyperKit.product made to run most seamlessly Docker containers on macOS they even support Kubernetes. This is why Microsoft released a new engine, WSL2, which is based on a more traditional approach of a lightweight virtual machine running an unmodified Linux kernel plus some kernel modules to better integrate on Windows.ĭocker for Mac is the official Docker inc. You can find here a very detailed deep dive into this brilliant technology even though Microsoft still supports it, it has significant limitations in terms of performance and compatibility. The second one is that Microsoft tried in the past to natively support Linux processes by real-time converting syscalls to run unmodified Linux processes on the Windows kernel (WSL1). This implementation has been possible thanks to the joint effort of Microsoft and Docker in 2016 to create a container engine implementing the Docker specification on Windows kudos to you, MS. Two things are worth mentioning here regarding Microsoft the first one is that Windows (and this sometimes can lead to some confusion) natively support Docker to run Windows containers. Instead, Docker CLI and docker-compose are native binaries for all operating systems. How does Docker work on macOS? Docker architecture on macOS – Source ĭocker engine, on macOS and Windows, needs a Linux Kernel there aren’t any exceptions here, you do not see it, but it is there to do all the dirty jobs (HN: ) If you are VI/Emacs user, all you need is your editor and tools in a container, or if you want a minimal Linux GUI env, take some inspiration here.Use DDEV + Mutagen for PHP projects (JS coming soon).Use named volumes and if you use VSCode you can rely on things like DevContainers to have a good DX – □ BONUS: PoC project with Backstage and DevContainers.VirtioFS to share the filesystem ( Docker Desktop, Rancher Desktop, Colima) – There are still some issues.Community post by Paolo Mainardi originally published on Paolo’s personal blog TL DRĪt the time of writing, the only viable option to have a decent performance and a good DX are:
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