Lean and Mean Docker containers
Moby
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| Lean and Mean Docker containers | Moby | |
|---|---|---|
| 38 | 212 | |
| 18,165 | 67,716 | |
| 1.3% | 0.4% | |
| 9.1 | 10.0 | |
| 6 days ago | 2 days ago | |
| Go | Go | |
| Apache License 2.0 | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Lean and Mean Docker containers
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Is updating software in Docker containers useful?
And if you want to make the container quickly secure without bloats, maybe give this a try https://github.com/slimtoolkit/slim
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An Overview of Kubernetes Security Projects at KubeCon Europe 2023
Slim.ai presents the data in a more user friendly way than many of the other tools in this post. On top of its open source SlimToolkit for identifying the contents of an image, Slim.ai uses Trivy for vulnerability scanning.
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Tips for reducing Docker image size
What about https://github.com/slimtoolkit/slim?
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package a poetry project in a docker container for production
A last practice that I do not use at all and which may interest you is to use slim toolkit to keep only the useful elements in your final image.
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Standard container sizes
Anyone tried using https://github.com/docker-slim/docker-slim To minify an image?..
- DockerSlim - Optimize Your Containerized App Dev Experience. Better, Smaller, Faster, and More Secure Containers Doing Less! Minify Docker Images by up to 30x.
- A practical approach to structuring Golang applications
- How to optimize docker image size?
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M1: Docker doesn't find shared x64 shared objects even though platform was specified
Distroless images are better left for people with serious need for lightweight images and good Linux knowledge because they require lot of planning with the build so that they stay light and work. If you need lighter images but docker isn't your main tool and you can't afford to take hours and hours of practicing different build strategies you can check docker-slim (https://dockersl.im/). With this tool you can easily size down the images.
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I deleted 78% of my Redis container and it still works
Maybe this would help in that regard: https://github.com/docker-slim/docker-slim
Moby
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Release Radar • March 2024 Edition
Having been featured in our February 2023, and January 2024 Release Radars, Moby is the original Linux Container runtime. This new version adds a bunch of changes to the Docker CLI and Moby itself with additional features. There's bug fixes and enhancements, with the main thing for users to be on the look out for containers that were created using Docker Engine 25.0.0. These containers might have duplicate MAC addresses, and thus must be recreated. The same goes for those containers created with Moby 25.0+ and with user defined MAC addresses. Read up on all these changes in the release notes.
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Choosing a Name for Your Computer
Formlabs does this as well for their 3d printers, my earliest encounter of this was when Docker started getting popular: https://github.com/moby/moby/blob/master/pkg/namesgenerator/...
- Docker Inc. refuses to patch HIGH vulnerabilities in Docker
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Do not install Docker Desktop on GNU/Linux systems
Try to use moby instead since that is the engine in Docker.
https://github.com/moby/moby
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Exploring Podman: A More Secure Docker Alternative
> Podman is designed to help with this by providing stronger default security settings compared to Docker. Features like rootless containers, user namespaces, and seccomp profiles, while available in Docker, aren't enabled by default and often require extra setup.
Seccomp has been enabled by default since 2015: https://github.com/moby/moby/pull/18780
It is true that Rootless isn't enabled by default but its "extra setup" can be done with a single command (`dockerd-rootless-setuptool.sh install`)
- Moby: Block io_uring_* syscalls in default profile
- Io_uring will be blocked by default on Docker
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OpenZFS 2.2: Block Cloning, Linux Containers, BLAKE3
Perhaps.
Thing is, https://github.com/moby/moby/blob/670bc0a46c4ca03b75f1e72f73... is using https://github.com/mistifyio/go-zfs which features code like `out, err := zfsOutput("get", "-H", key, d.Name)` (Source: https://github.com/mistifyio/go-zfs/blob/master/zfs.go#L315) to get a single zfs property.
Somebody chose to use a library as abstraction that looks good but is implemented as a MVP (nothing wrong with that). "In the future, we hope to work directly with libzfs" should have raised an alarm somewhere, though.
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The Twelve-Factor App
AppArmor can restrict /proc and this is even used by docker: https://github.com/moby/moby/blob/master/contrib/apparmor/te...
What are some alternatives?
minideb - A small image based on Debian designed for use in containers
podman - Podman: A tool for managing OCI containers and pods.
Go random string generator - Flexible and customizable random string generator
containerd - An open and reliable container runtime
pipx - Install and Run Python Applications in Isolated Environments
nerdctl - contaiNERD CTL - Docker-compatible CLI for containerd, with support for Compose, Rootless, eStargz, OCIcrypt, IPFS, ...
dive - A tool for exploring each layer in a docker image
docker-openwrt - OpenWrt running in Docker
gophish - Open-Source Phishing Toolkit
ofelia - A docker job scheduler (aka. crontab for docker)
simple-scrypt - A convenience library for generating, comparing and inspecting password hashes using the scrypt KDF in Go 🔑
k3d - Little helper to run CNCF's k3s in Docker