cache VS buildkit

> with no persistent storage

There's https://github.com/actions/cache though?

Use Cache Actions: GitHub Actions provides cache actions that simplify caching implementation. The @actions/cache JavaScript library is a popular choice for managing caching in workflows. It offers flexible options for storing and retrieving cache artifacts based on keys, scopes, and paths.

GitHub maintain a set of repos called actions. One of which is called cache.

By utilizing the actions/cache action action, we implemented a strategy to store and retrieve dependencies, preventing redundant installations.

I do think it's good practice to enable caching, such that your script doesn't hit RubyGems / pip / npm / etc every time it runs.

That way at least the automation activity stays entirely within the GitHub / Azure network.

It looks like you can do that for Ruby by adding this:

https://github.com/actions/cache/blob/master/examples.md#rub...

    - uses: ruby/setup-ruby@v1

➜ getting-started-with-act git:(master) act -j build WARN ⚠ You are using Apple M1 chip and you have not specified container architecture, you might encounter issues while running act. If so, try running it with '--container-architecture linux/amd64'. ⚠ [Node.js CI/build] 🚀 Start image=node:16-buster-slim [Node.js CI/build] 🐳 docker pull image=node:16-buster-slim platform= username= forcePull=false [Node.js CI/build] 🐳 docker create image=node:16-buster-slim platform= entrypoint=["tail" "-f" "/dev/null"] cmd=[] [Node.js CI/build] 🐳 docker run image=node:16-buster-slim platform= entrypoint=["tail" "-f" "/dev/null"] cmd=[] [Node.js CI/build] ☁ git clone 'https://github.com/actions/setup-node' # ref=v3 [Node.js CI/build] ☁ git clone 'https://github.com/actions/cache' # ref=v3 [Node.js CI/build] ☁ git clone 'https://github.com/actions/upload-artifact' # ref=v3 [Node.js CI/build] ⭐ Run Main actions/checkout@v3 [Node.js CI/build] 🐳 docker cp src=/Users/andrewevans/Documents/projects/getting-started-with-act/. dst=/Users/andrewevans/Documents/projects/getting-started-with-act [Node.js CI/build] ✅ Success - Main actions/checkout@v3 [Node.js CI/build] ⭐ Run Main Use Node.js 16.x [Node.js CI/build] 🐳 docker cp src=/Users/andrewevans/.cache/act/actions-setup-node@v3/ dst=/var/run/act/actions/actions-setup-node@v3/ [Node.js CI/build] 🐳 docker exec cmd=[node /var/run/act/actions/actions-setup-node@v3/dist/setup/index.js] user= workdir= [Node.js CI/build] 💬 ::debug::isExplicit: [Node.js CI/build] 💬 ::debug::explicit? false

You could try to find some point in the process where you can set up Actions caches with actions/cache, otherwise Container customization for Self-Hosted Runners is currently in Beta.

I would configure Github Actions cache so Docker doesn't have to compile all layers from scratch every time

In the copied example, npm caching is done via actions/cache@v2 action. But we can simplify our workflow by dropping this step and using built-in functionality for caching

> We are uding docker-in-docker at the moment

You can also run a "less privileged" container with all the features of Docker by using rootless buildkit in Kubernetes. Here are some examples:

https://github.com/moby/buildkit/tree/master/examples/kubern...

https://github.com/moby/buildkit/blob/master/examples/kubern...

It's also possible to run dedicated buildkitd workers and connect to them remotely.

- BuildOp evaluates its input as additional LLB operations to add to the graph to allow for dynamic build graphs (also unused in the Dockerfile frontend)

With the Dockerfile Explorer, we run the Dockerfile frontend[1] that BuildKit uses inside of WASM to parse and produce the LLB output locally in your browser. We then embed the Monaco Editor so that you can change your Dockerfile to see how it impacts the LLB output that BuildKit will use to build your Docker image.

You can see a quick video and read more details on how it all works here: https://depot.dev/blog/dockerfile-explorer.

We'd love any feedback or ideas folks would like around this type of tool!

[0] https://github.com/moby/buildkit#exploring-llb

Now since Kubernetes works off of containerd I'll be taking a different approach on handling container builds by using nerdctl and the buildkit that comes bundled with it. I'll do this on the amd64 control plane node since it's beefier than my Raspberry Pi workers for handling builds and build related services. Go ahead and download and unpack the latest nerdctl release as of writing (make sure to check the release page in case there's a new one):

There's a 2-year-old moby/buildkit GitHub issue about frequent build cache misses when using the BuildKit docker-container driver and multi-stage builds. Anyone else in this sub run into this problem and/or have reasonable workarounds? It seems like something that should come up pretty often.

A couple months ago I encountered a bug in buildkit - when enabling OpenTelemetry tracing, we got occasional panics. With a bit of investigation, we found the cause, fixed and tested in our fork and internal deployments, and pushed to upstream.

I do some search in the internet and there seems to be no good solution, so I just create a feature request: https://github.com/moby/buildkit/issues/3859

Yeah, only Linux containers at the moment, BuildKit is the way we are constructing pipelines and doing caching. Split on if we will support non-linux hosts, but definitely want to find a good solution to not doing Docker-in-Docker.

Relevant issues are https://github.com/moby/buildkit/issues/3011 and https://github.com/moby/buildkit/issues/1512.