6c23bdbe63
Pin every job to gitea.dcglab.co.uk/steve/ci-runner-go:2026-05-08 so Go, Node, and Docker tooling are already installed when the job starts. Drops three actions/setup-go invocations from ci.yml (redundant — Go is on PATH) and inherits Buildx + Compose v2 in e2e.yml and release.yml without per-job apt-installs. Recipe lives in steve/ci. Bump the date pin in lockstep across the three workflows when picking up a fresher image (e.g. when the Go floor moves).