FROM golang:alpine AS build

WORKDIR /usr/local/go/src/github.com/google/mtail

RUN apk add build-base git \
    && git clone https://github.com/google/mtail . \
    && make install_deps \
    && CGO_ENABLED=0 GOOS=linux go build -o /usr/bin/mtail -a -ldflags '-extldflags "-static"' ./cmd/mtail \
    && mkdir /tmp/empty

FROM scratch

COPY --from=build /usr/bin/mtail /mtail
COPY --from=build /tmp/empty /tmp

EXPOSE 3903
ENTRYPOINT ["/mtail", "-logtostderr"]