community
feed-test
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.
community
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Buildpacks vs. Dockerfiles
A list of adopters (many of which are hosting providers) is here: https://github.com/buildpacks/community/blob/main/ADOPTERS.m...
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Run More Stuff in Docker
Many comments here point out how difficult it is to manage a separate dependency stack for each container when you use Dockerfiles to build them. This problem is just as difficult, time-intensive, and security-critical for microservice apps running on K8s as it is for CLI tools and graphical apps.
Worth pointing out that there is an incubating CNCF project that tries to solve this problem by forgoing Dockerfiles entirely: Cloud Native Buildpacks (https://buildpacks.io)
CNB defines safe seams between OCI image layers so that can be replaced out of order, directly on any Docker registry (only JSON requests), and en-mass. This means you can, e.g., instantly update all of your OS packages for your 1000+ containers without running any builds, as long as you use an LTS distribution with strong ABI promises (e.g., Ubuntu 20.04). Most major cloud vendors have quietly adopted it, especially for function builds: https://github.com/buildpacks/community/blob/main/ADOPTERS.m...
You might recognize "buildpacks" from Heroku, and in fact the project was started several years ago in the CNCF by the folks who maintained the Heroku and Cloud Foundry buildpacks in the pre-Dockerfile era.
[Disclaimer: I'm one of the founders of the project, on the VMware (formerly Cloud Foundry) side.]
feed-test
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Witchery: tools for building distroless images with alpine
I do this with Nix. You just tell it what applications to put into the image and it will copy just the image and its dependencies.
https://gitlab.com/kevincox/feed-test/-/blob/1a09590e98608ed...
This is a trivial example but even that will pull in libc and some TZ data if required. I've also used this to package up more complex dependencies with data files and lots of native libraries such as the mumble server.
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Buildpacks vs. Dockerfiles
I use Nix to do something similar: https://gitlab.com/kevincox/feed-test/-/blob/8b217add5fc11bb...
What are some alternatives?
rules_docker - Rules for building and handling Docker images with Bazel
go - A Cloud Native Buildpack for Go
nodejs - A Cloud Native Buildpack for Node.JS
cutlass - Write CNB integration tests for Pack in Ruby with cutlass
github-config - Common repository configuration
whalebrew - Homebrew, but with Docker images
podman - Podman: A tool for managing OCI containers and pods.
packages.redbeardlab.com
Sandboxie - Sandboxie Plus & Classic