Dockerfile

# syntax=docker/dockerfile:1

FROM golang:1.20.4 AS build

ENV CGO_ENABLED=0

# TODO: mount the caches from the host system, having first established and
# switched to a user with the same UID and GID as the caller.

RUN \
  --mount=type=cache,target=/cache/gocache \
  --mount=type=cache,target=/cache/gomodcache \
  export GOCACHE=/cache/gocache GOMODCACHE=/cache/gomodcache && \
  go install -trimpath github.com/rogpeppe/go-internal/cmd/testscript@v1.10.0

RUN \
  --mount=type=cache,target=/cache/gocache \
  --mount=type=cache,target=/cache/gomodcache \
  export GOCACHE=/cache/gocache GOMODCACHE=/cache/gomodcache && \
  go install -trimpath cuelang.org/go/cmd/cue@v0.6.0-alpha.1

FROM debian@sha256:63d62ae233b588d6b426b7b072d79d1306bfd02a72bff1fc045b8511cc89ee09

RUN mkdir -p /go/bin

ENV PATH="/go/bin:${PATH}"

WORKDIR /

COPY ./entrypoint.sh /usr/bin/entrypoint.sh
RUN chown root:root /usr/bin/entrypoint.sh
RUN chmod 755 /usr/bin/entrypoint.sh
RUN chown root:root /usr/bin/entrypoint.sh

COPY --from=build /go/bin/testscript /go/bin
COPY --from=build /go/bin/cue /go/bin

ENTRYPOINT ["/usr/bin/entrypoint.sh"]