Dockerfile

FROM rails

ENV DISCOURSE_VERSION 1.5.2
ENV HOMEDIR /var/www/discourse

RUN curl --silent --location https://deb.nodesource.com/setup_4.x | bash -

# The above will do an apt-get update
RUN apt-get install -yqq --no-install-recommends \
    libxml2 \
    nodejs \
    wget \
    runit \
    && npm install uglify-js -g \
    && npm install svgo -g \
    && apt-get install -yqq --no-install-recommends \
    advancecomp jhead jpegoptim libjpeg-turbo-progs optipng

RUN mkdir /jemalloc && cd /jemalloc \
    && wget https://github.com/jemalloc/jemalloc/releases/download/3.6.0/jemalloc-3.6.0.tar.bz2 \
    && tar -xjf jemalloc-3.6.0.tar.bz2 && cd jemalloc-3.6.0 && ./configure && make \
    && mv lib/libjemalloc.so.1 /usr/lib && cd / && rm -rf /jemalloc

COPY install-imagemagick /tmp/install-imagemagick
RUN /tmp/install-imagemagick

# Validate install
RUN ruby -e "v='`convert -version`'; ['png','tiff','jpeg','freetype'].each{ |f| ((STDERR.puts('no ' + f +  ' support in imagemagick')); exit(-1)) unless v.include?(f)}"

COPY install-pngcrush /tmp/install-pngcrush
RUN /tmp/install-pngcrush

COPY install-gifsicle /tmp/install-gifsicle
RUN /tmp/install-gifsicle

COPY install-pngquant /tmp/install-pngquant
RUN /tmp/install-pngquant

COPY install-nginx /tmp/install-nginx
RUN /tmp/install-nginx

# Discourse specific bits
RUN useradd discourse -s /bin/bash -m -U &&\
    mkdir -p /var/www && cd /var/www &&\
    git clone https://github.com/discourse/discourse.git &&\
    cd discourse &&\
    git remote set-branches --add origin tests-passed &&\
    chown -R discourse:discourse $HOMEDIR &&\
    cd $HOMEDIR &&\
    bundle install --deployment \
    --without test --without development &&\
    find $HOMEDIR/vendor/bundle -name tmp -type d -exec rm -rf {} +

RUN cd $HOMEDIR \
    && mkdir -p tmp/pids \
	&& mkdir -p tmp/sockets \
	&& touch tmp/.gitkeep \
	&& mkdir -p                    /shared/log/rails \
	&& bash -c "touch -a           /shared/log/rails/{production,production_errors,unicorn.stdout,unicorn.stderr}.log" \
	&& bash -c "ln    -s           /shared/log/rails/{production,production_errors,unicorn.stdout,unicorn.stderr}.log $HOMEDIR/log" \
	&& bash -c "mkdir -p           /shared/{uploads,backups}" \
	&& bash -c "ln    -s           /shared/{uploads,backups} $HOMEDIR/public" \
	&& chown -R discourse .

COPY nginx.conf /etc/nginx/conf.d/discourse.conf

RUN sed -i "s/pid \/run\/nginx.pid\;/daemon off\;/" /etc/nginx/nginx.conf

RUN rm /etc/nginx/sites-enabled/default \
    && mkdir -p /var/nginx/cache

COPY service /etc/service

COPY policy.xml /usr/local/etc/ImageMagick-6/policy.xml

COPY rake /usr/local/bin/rake

RUN rm -rf /var/lib/apt/lists/*

ENV RAILS_ENV production
ENV RUBY_GC_MALLOC_LIMIT 90000000
ENV DISCOURSE_DB_HOST postgres
ENV DISCOURSE_REDIS_HOST redis
ENV UNICORN_WORKERS 3
ENV UNICORN_SIDEKIQS 1

EXPOSE 80
CMD ["/usr/bin/runsvdir", "-P", "/etc/service"]