Dockerfile

FROM perl
MAINTAINER Pedro Melo <melo@simplicidade.org>

## Bootstrap what we need
RUN apt-get update -y \
    && cpanm -q -n Carton \
    && rm -rf "$HOME/.cpanm" \
    && /usr/sbin/useradd -m -d /app -s /bin/nologin -U app \
    && apt-get clean autoclean \
    && apt-get autoremove -y

## Copy our magic scripts
COPY base-entrypoint run-docker-build-hook install-deps /usr/sbin/
RUN  chmod 555                         \
       /usr/sbin/base-entrypoint       \
       /usr/sbin/run-docker-build-hook \
       /usr/sbin/install-deps 

## Saner/safer defaults
WORKDIR /app
ENV APP_HOMEDIR  /app

## Make application lib's available out-of-the-box
## This requires the entrypoint script below
ENV APP_PERL5LIB  /app/lib

## Define entrypoint
ENTRYPOINT ["/usr/sbin/base-entrypoint"]
ENV BASE_ENTRYPOINT "/usr/sbin/base-entrypoint"
ENV BASE_DEPS       "/deps/local"
ENV BASE_PERL5LIB   "$BASE_DEPS/lib/perl5"


## Set a decent default CMD... Each person will override it to taste, I'm sure.
CMD ["/bin/bash"]


### Our build process

## Init the hook system
ONBUILD COPY .docker-build-hooks/ /build/.docker-build-hooks/
ONBUILD RUN /usr/sbin/run-docker-build-hook after-init-hooks

## Install you app dependencies
ONBUILD RUN /usr/sbin/run-docker-build-hook before-dependencies-install
ONBUILD COPY cpanfile cpanfile.snapshot /deps/
ONBUILD RUN /usr/sbin/install-deps \
            && /usr/sbin/run-docker-build-hook after-dependencies-install

## Copy your app files
ONBUILD RUN /usr/sbin/run-docker-build-hook before-app-copy
ONBUILD COPY . /app
ONBUILD RUN /usr/sbin/run-docker-build-hook after-app-copy \
            && chown -R app:app .

## From this point on, we run as 'app'
ONBUILD USER app