FROM golang:1.10.1 as build WORKDIR /go/src/mcquay.me/lim COPY . . RUN CGO_ENABLED=0 GOOS=linux go build -o /usr/local/bin/lim . FROM alpine:latest RUN apk --no-cache add ca-certificates WORKDIR / COPY --from=build /usr/local/bin/lim /bin/ CMD ["/bin/sh", "-c", "cat /dev/urandom | /bin/lim 16b | xxd"]