Dockerfile for XML::Enc issue with Net::SAML2

Dockerfile

# XML::Enc version bump from 0.11 to 0.12 kills our Net::SAML2 build's tests
# this dockerfile creates some perl .debs for use in another docker image
# the failure happens with either cpanminus or dh-make-perl (.deb package builder)
# lines 103 - 117 have 3 different build options for using XML::Enc

FROM debian:bookworm-slim AS perlbuilder
ENV DEBIAN_FRONTEND=noninteractive

WORKDIR root

RUN apt-get update \
    && apt-get install --no-install-recommends --no-install-suggests --yes \
        dh-make-perl \
        git \
        perl \
        curl \
    && git config --global user.email "perlbuilder@example.com" \
    && git config --global user.name "Perl Builder" \
    && echo perlbuilder > /etc/mailname


## build HTML::PageIndex. It has no deps.
# the 'echo yes' autoconfigures cpan on the first run. Doesn't need to be repeated
RUN echo yes | dh-make-perl --build --cpan HTML::PageIndex


## build Net::SAML2
# install deps for building Net::SAML2
# following items doen't have debian packages and need to be built/installed before Net::SAML2
# - Crypt::OpenSSL::Verify
# - XML::Enc
# - XML::Sig
# - Test::Mock::One
# - URN::OASIS::SAML2
# they are also runtime deps, so we copy them to install them in filesystembuilder (except Test::Mock::One)

# these are the deps for building the cpan deps for Net::SAML2 (below, before the Net::SAML2 build step)
RUN apt-get install --yes \
        libimport-into-perl \
        libpath-tiny-perl \
        libsub-override-perl \
        libtest-deep-perl \
        libtest-exception-perl \
        libtest-fatal-perl \
        libtest-lib-perl \
        libtest-notabs-perl \
        libtest-pod-coverage-perl \
        libtest-pod-perl \
        libtest-simple-perl \
        liburi-perl \
        libxml-libxml-perl \
        libcrypt-openssl-x509-perl \
        libcrypt-openssl-guess-perl \
        libcryptx-perl \
        libfile-slurper-perl \
        libssl-dev \
        libtest-exception-perl \
        libnamespace-autoclean-perl \
        libxml-libxml-perl \
        libcrypt-openssl-dsa-perl \
        libcrypt-openssl-rsa-perl \
        pristine-tar


# these are the Net::SAML2 runtime deps from the buildlog (some are also build deps)
# there are additional runtime deps not listed here, but are installed in the main image
RUN apt-get install --yes \
        libcrypt-openssl-bignum-perl \
        libcrypt-openssl-random-perl \
        libcrypt-openssl-rsa-perl \
        #libcrypt-openssl-verify-perl \
        libcrypt-openssl-x509-perl \
        libdatetime-format-xsd-perl \
        libdatetime-hires-perl \
        libdatetime-perl \
        libfile-slurper-perl \
        libhttp-message-perl \
        libio-compress-perl \
        liblwp-protocol-https-perl \
        libmoose-perl \
        libmoosex-types-common-perl \
        libmoosex-types-datetime-perl \
        libmoosex-types-perl \
        libmoosex-types-uri-perl \
        libnamespace-autoclean-perl \
        libscalar-list-utils-perl \
        libtry-tiny-perl \
        libtypes-serialiser-perl \
        liburi-encode-perl \
        liburi-perl \
        #liburn-oasis-saml2-perl \
        libwww-perl \
        #libxml-enc-perl \
        libxml-generator-perl \
        libxml-libxml-perl \
        #libxml-sig-perl \
        libxml-writer-perl

# the order of these dh-make-perl commands matters
RUN dh-make-perl --install --cpan Test::Mock::One
RUN dh-make-perl --install --cpan Crypt::OpenSSL::Verify

## OPTION 1: the usual way, pulls v0.12 (=current), which fails a test in Net:SAML2's build
RUN dh-make-perl --install --cpan XML::Enc

### OPTION 2: handhold dh-make-perl to install v0.11. Net::SAML2 builds correctly
#ARG PACKAGE=XML-Enc-0.11
## the chown is needed otherwise git balks at unfamiliar UIDs in the extracted tarfile (git called by dh-make-perl)
#RUN curl https://cpan.metacpan.org/authors/id/T/TI/TIMLEGGE/${PACKAGE}.tar.gz -o ${PACKAGE}.tar.gz \
#    && tar zxf ${PACKAGE}.tar.gz \
#    && chown -R root:root ${PACKAGE} \
#    && cd XML-Enc-0.11 && git init && cd - \
#    && dh-make-perl --install ${PACKAGE}/

## OPTION 3: install v0.11 with cpanm, but then we don't get a .deb to copy around. Net::SAML2 builds correctly
#RUN apt install cpanminus --yes \
#    && cpanm https://cpan.metacpan.org/authors/id/T/TI/TIMLEGGE/XML-Enc-0.11.tar.gz

RUN dh-make-perl --install --cpan XML::Sig
RUN dh-make-perl --install --cpan URN::OASIS::SAML2

RUN dh-make-perl --build --cpan Net::SAML2

# use this line to get docker buildx to print out the buildlog if using cpanm to build stuff
#RUN apt install cpanminus --yes && cpanm Net::SAML2 || cat /root/.cpanm/work/*/build.log && exit 111