## lint image
## current as of 2022-01-25
FROM golangci/golangci-lint:latest AS linter

RUN mkdir -p /build
WORKDIR /build
COPY ./ ./
RUN golangci-lint run

## build image:
# this is golang:1.17.6-buster as of 2022-01-27
FROM golang@sha256:52a48e0239f4d645b20ac268a60361703afe7feb2df5697fa89f72052cb87a3e AS builder
#FROM golang:1.16-buster AS builder

ENV DEBIAN_FRONTEND noninteractive
RUN apt update && apt install -y make bzip2 curl unzip

# install newer protoc than what comes with buster
ENV PB_REL https://github.com/protocolbuffers/protobuf/releases
RUN curl -LO $PB_REL/download/v3.19.0/protoc-3.19.0-linux-x86_64.zip && \
    unzip protoc-3.19.0-linux-x86_64.zip -d /usr/local

RUN mkdir -p /build
WORKDIR /build

COPY go.mod .
COPY go.sum .

COPY ./ ./
# don't lint again during build because there's no golangci-lint in this
# image and we already did it in a previous stage
#RUN make lint
RUN make mfer.cmd
#RUN go mod vendor
RUN tar -c . | bzip2 > /src.tbz2


FROM scratch
COPY --from=builder /src.tbz2 /src.tbz2
COPY --from=builder /build/mfer.cmd /mfer
ENTRYPOINT ["/mfer"]