FROM golang:1.11 AS builder ENV CGO_ENABLED 0 ENV GOOS linux WORKDIR $GOPATH/src/zero COPY . . RUN go build -ldflags="-s -w" -o /app/unaryproxy example/rpc/proxy/proxy.go FROM alpine WORKDIR /app COPY --from=builder /app/unaryproxy /app/unaryproxy CMD ["./unaryproxy"]