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FROM golang:1.23-alpine as builder
MAINTAINER Fullstory Engineering
# create non-privileged group and user
RUN addgroup -S grpcurl && adduser -S grpcurl -G grpcurl
WORKDIR /tmp/fullstorydev/grpcurl
# copy just the files/sources we need to build grpcurl
COPY VERSION *.go go.* /tmp/fullstorydev/grpcurl/
COPY cmd /tmp/fullstorydev/grpcurl/cmd
# and build a completely static binary (so we can use
# scratch as basis for the final image)
ENV CGO_ENABLED=0
ENV GO111MODULE=on
RUN go build -o /grpcurl \
-ldflags "-w -extldflags \"-static\" -X \"main.version=$(cat VERSION)\"" \
./cmd/grpcurl
FROM alpine:3 as alpine
WORKDIR /
COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
COPY --from=builder /etc/passwd /etc/passwd
COPY --from=builder /grpcurl /bin/grpcurl
USER grpcurl
ENTRYPOINT ["/bin/grpcurl"]
# New FROM so we have a nice'n'tiny image
FROM scratch
WORKDIR /
COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
COPY --from=builder /etc/passwd /etc/passwd
COPY --from=builder /grpcurl /bin/grpcurl
USER grpcurl
ENTRYPOINT ["/bin/grpcurl"]
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