build-push-action/test/multi.Dockerfile

# syntax=docker/dockerfile:1
FROM --platform=$BUILDPLATFORM golang:alpine AS build
RUN apk add --no-cache ca-certificates golang nodejs rust cargo

ARG TARGETPLATFORM
ARG BUILDPLATFORM
RUN echo "I am running on $BUILDPLATFORM, building for $TARGETPLATFORM" > /log

FROM alpine
COPY --from=build /log /log