footstone

footstone holds the container images the Eru project builds and runs code in: a build image that carries the Go toolchain together with fpm, rpm and dpkg for producing distribution packages, and a run-lambda image that gives Eru lambda workloads an unprivileged user with passwordless sudo. One directory per image, one Dockerfile each, all published to GHCR for linux/amd64 and linux/arm64.

Documentation: projecteru2.github.io/footstone (source in docs/).

Images

Image	Base	Contents
ghcr.io/projecteru2/footstone/build	golang:1.27-alpine	Go 1.27, fpm, rpm, dpkg, git, alpine-sdk, libgit2-dev
ghcr.io/projecteru2/footstone/run-lambda	alpine:3.22	sudo, plus a lambda user (uid 65530) with passwordless sudo

Every image is tagged latest on a master push, with the commit sha, and with the tag name on a v* tag.

Quick start

Build an Eru component inside the build image:

docker run --rm -v "$PWD:/src" -w /src \
  ghcr.io/projecteru2/footstone/build \
  go build -o eru-core .

Use the lambda base for a workload image:

FROM ghcr.io/projecteru2/footstone/run-lambda
USER lambda

Related projects

• core — stateless gRPC resource scheduler
• agent — per-node daemon reporting node and workload status
• cli — command line client for the core API
• resource-extend — external resource plugins (gpu, storage)
• quickstart — Ansible playbook that deploys an Eru cluster

Development

make check    # run the Dockerfile linter on every image
make build    # build every image for the local platform
make push     # build and push every image for linux/amd64,linux/arm64
make all      # check, then build

make help lists every target. REGISTRY, IMAGES, PLATFORMS and TAG override the defaults, for example make push TAG=v1.0.0 IMAGES=run-lambda.

License

This project is licensed under the MIT License. See LICENSE.