Simple Dockerfile base for Perl project

Dockerfile

FROM our/base

COPY *.patch /build/

## Replicate std perl image but on top of our base image
RUN cd /build                                                                                             \
    && mkdir src                                                                                          \
    && curl -SL https://cpan.metacpan.org/authors/id/S/SH/SHAY/perl-5.20.2.tar.bz2 -o perl-5.20.2.tar.bz2 \
    && echo '63126c683b4c79c35008a47d56f7beae876c569f *perl-5.20.2.tar.bz2' | sha1sum -c -                \
    && tar --strip-components=1 -xjf perl-5.20.2.tar.bz2 -C src                                           \
    && rm perl-5.20.2.tar.bz2                                                                             \
    && cd src                                                                                             \
    && cat *.patch | patch -p1                                                                            \
    && ./Configure -Duse64bitall  -des -Dprefix='/usr/bin'                                                \
    && make -j4                                                                                           \
    && make test_harness                                                                                  \
    && make install                                                                                       \
    && cd /build                                                                                          \
    && curl -LO https://raw.githubusercontent.com/miyagawa/cpanminus/master/cpanm                         \
    && chmod +x cpanm                                                                                     \
    && ./cpanm App::cpanminus                                                                             \
    && rm -fr ./cpanm /root/.cpanm /build/src /build/*patch

## Install Carton, our bootstrap system
RUN ["cpanm", "-q", "-n", "Carton"]

ENTRYPOINT ["/base/start.pl", "carton", "exec"]

### Things all our Perl apps will do

ONBUILD COPY cpanfile cpanfile.snapshot /build/
ONBUILD RUN  cd /build && carton install
ONBUILD COPY . /build