buildkit VS polygott

> 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.

> For context, I'm referencing our (legacy) base image for projects on Replit: Polygott (https://github.com/replit/polygott/).

May I ask why you didn't use something like Ansible to build such a complex image? With appropriate package version pinning (which it's the real crux here) it should work well enough to get a reproducible build.

I understand it would already have been something different from a pure Dockerfile so it's not that fair to compare buuut...

Look into how repl.it built their platform, especially their polygott Docker image. You can find out plenty of information about how these systems are built if you delve deeper into their ecosystem.

Repl.it has an in-progress OCaml repl option sort of hidden away because it's "WIP"; and by WIP I mean it works for editing and saving is basically broken otherwise and has been for a few years (according to Sys.ocaml_version it's using OCaml 4.05 from 2017) because of a claim of focusing on core features instead of more languages. Though that didn't stop them from adding other languages since, including adding ReasonML (via NodeJS and BuckleScript) since then, so the argument is bullshit and they'll probably never get it working.

If you look at the repo under the gen directory you’ll see the Dockerfile template. It builds on the Ubuntu base image (line 6 FROM Ubuntu...) which means you will get a bash shell (default login shell) in each container built from it.

You said the spat was about him "allegedly open sourcing their project". How could he do that when it was already open source (at https://github.com/replit/polygott)?

Slightly off-topic - what is a secure way to run arbitrary code in arbitrary languages in a server? I know replit's polygott docker container allows it.

https://github.com/replit/polygott/