Docker images: https://github.com/notpushkin?tab=packages&tab=packages&q=go...
Simple stub for the signon service (likely needs further modification): https://gitlab.com/notpushkin/stupidauth/container_registry
And the Docker Compose stack: https://gist.github.com/notpushkin/f174b52efc6285e6be30fb66b... (works with https://lunni.dev/ or Docker Swarm + Traefik)
If you do manage to run it please ping me, I'm also interested in trying it out!
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Edit: discusson on GitHub: https://github.com/alphagov/forms/discussions/106