Dockerfile

FROM perl:5.38.0-bookworm AS build

RUN set -xe ; \
	cpanm HTTP::Daemon

FROM alpine:3 AS sys

RUN set -xe; \
    mkdir -p /target/etc; \
    mkdir -p /blank; \
    apk --no-cache add \
      ca-certificates \
      tzdata \
    ; \
    update-ca-certificates; \
    ln -sf ../usr/share/zoneinfo/Etc/UTC /target/etc/localtime; \
    echo "Etc/UTC" > /target/etc/timezone;

FROM scratch

COPY --from=sys /target/etc /etc
COPY --from=sys /usr/share/zoneinfo/Etc/UTC /usr/share/zoneinfo/Etc/UTC
COPY --from=sys /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
COPY --from=sys /blank /tmp

# Perl binary
COPY --from=build /usr/local/bin/perl /usr/bin/perl

# Perl libraries
COPY --from=build /usr/local/lib/perl5 /usr/local/lib/perl5

# System libraries
COPY --from=build /usr/local/lib/perl5/5.38.0/x86_64-linux-gnu/CORE/libperl.so /usr/local/lib/perl5/5.38.0/x86_64-linux-gnu/CORE/libperl.so
COPY --from=build /lib/x86_64-linux-gnu/libc.so.6 /lib/x86_64-linux-gnu/libc.so.6
COPY --from=build /lib/x86_64-linux-gnu/libm.so.6 /lib/x86_64-linux-gnu/libm.so.6
COPY --from=build /lib/x86_64-linux-gnu/libcrypt.so.1 /lib/x86_64-linux-gnu/libcrypt.so.1
COPY --from=build /lib64/ld-linux-x86-64.so.2 /lib64/ld-linux-x86-64.so.2
COPY --from=build /etc/ld.so.cache /etc/ld.so.cache

# Simple Perl HTTP server
COPY ./server.pl /usr/src/server.pl