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kotlinlang

Do you all have some docker image to build web (and multiplatform in general) projects? I'm thinking in rolling up my own but I wonder if there is already someone that did it. Stuff like glibc, headless browsers and similar

I don’t. I use GitHub actions for building. What advantage would a docker image have and which platforms are you going to build (besides web which you already mentioned)?

As Michael said, besides web there's no point in using docker, I use docker to build my ktor backend image and push to docker registry but that's done via GitHub actions

But where does github build it? I'm using gitlab at the moment not github

They provide their own so called GitHub Runners. <https://docs.github.com/en/actions/using-github-hosted-runners/about-github-hosted-runners>