# fleet-enrol-broker — TPM identity enrolment broker (docs/tpm-enrolment-design.md).
#
# Two stages: a reproducible static Go build, then the smallstep `step` CLI image
# as the runtime base (the production signer shells out to `step ca token` +
# `step ca sign`). The broker is stdlib-only, so the build needs no module
# download (GOPROXY=off) and the verity-style reproducibility flags apply.
#
# Pin + mirror these base tags through your registry (like the rest of the stack)
# if the build/serving host has no egress.
FROM harbor.bitasylum.org/dockerhub/library/golang:1.23-alpine AS build
WORKDIR /src
COPY go.mod .
COPY *.go wordlist.txt ./
ENV CGO_ENABLED=0 GOPROXY=off GOTOOLCHAIN=local
RUN go build -trimpath -buildvcs=false -ldflags '-s -w -buildid=' -o /enrol-broker .

FROM harbor.bitasylum.org/dockerhub/smallstep/step-cli:latest
COPY --from=build /enrol-broker /usr/local/bin/enrol-broker
# Non-root by default (the step-cli image runs as uid 1000 "step"); the broker
# binds loopback ports >1024 and only READS the mounted CA root + provisioner
# password, so no extra privilege is needed.
ENTRYPOINT ["/usr/local/bin/enrol-broker"]