Dockerfile

# https://github.com/letsencrypt/letsencrypt/pull/431#issuecomment-103659297
# it is more likely developers will already have ubuntu:trusty rather
# than e.g. debian:jessie and image size differences are negligible
FROM ubuntu:trusty
MAINTAINER Jakub Warmuz <jakub@warmuz.org>
MAINTAINER William Budington <bill@eff.org>

# Note: this only exposes the port to other docker containers. You
# still have to bind to 443@host at runtime, as per the ACME spec.
EXPOSE 443

# TODO: make sure --config-dir and --work-dir cannot be changed
# through the CLI (letsencrypt-docker wrapper that uses standalone
# authenticator and text mode only?)
VOLUME /etc/letsencrypt /var/lib/letsencrypt

WORKDIR /opt/letsencrypt

# no need to mkdir anything:
# https://docs.docker.com/reference/builder/#copy
# If <dest> doesn't exist, it is created along with all missing
# directories in its path.

COPY bootstrap/ubuntu.sh /opt/letsencrypt/src/
RUN /opt/letsencrypt/src/ubuntu.sh && \
    apt-get clean && \
    rm -rf /var/lib/apt/lists/* \
           /tmp/* \
           /var/tmp/*

# the above is not likely to change, so by putting it further up the
# Dockerfile we make sure we cache as much as possible


COPY setup.py README.rst CHANGES.rst MANIFEST.in /opt/letsencrypt/src/

# all above files are necessary for setup.py, however, package source
# code directory has to be copied separately to a subdirectory...
# https://docs.docker.com/reference/builder/#copy: "If <src> is a
# directory, the entire contents of the directory are copied,
# including filesystem metadata. Note: The directory itself is not
# copied, just its contents." Order again matters, three files are far
# more likely to be cached than the whole project directory

COPY letsencrypt /opt/letsencrypt/src/letsencrypt/
COPY acme /opt/letsencrypt/src/acme/
COPY letsencrypt-apache /opt/letsencrypt/src/letsencrypt-apache/
COPY letsencrypt-nginx /opt/letsencrypt/src/letsencrypt-nginx/


# requirements.txt not installed!
RUN virtualenv --no-site-packages -p python2 /opt/letsencrypt/venv && \
    /opt/letsencrypt/venv/bin/pip install \
    -e /opt/letsencrypt/src/acme \
    -e /opt/letsencrypt/src \
    -e /opt/letsencrypt/src/letsencrypt-apache \
    -e /opt/letsencrypt/src/letsencrypt-nginx

# install in editable mode (-e) to save space: it's not possible to
# "rm -rf /opt/letsencrypt/src" (it's stays in the underlaying image);
# this might also help in debugging: you can "docker run --entrypoint
# bash" and investigate, apply patches, etc.

ENV PATH /opt/letsencrypt/venv/bin:$PATH
# TODO: is --text really necessary?
ENTRYPOINT [ "letsencrypt", "--text" ]