add mastodon image

mastodon/Dockerfile

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+FROM alpine:3.6
+
+ARG VERSION=master
+ARG REPOSITORY=tootsuite/mastodon
+
+ENV UID=991 GID=991 \
+    RUN_DB_MIGRATIONS=true \
+    SIDEKIQ_WORKERS=5 \
+    RAILS_SERVE_STATIC_FILES=true \
+    RAILS_ENV=production \
+    NODE_ENV=production \
+    PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/mastodon/bin
+
+WORKDIR /mastodon
+
+RUN apk -U upgrade \
+ && apk add \
+    ca-certificates \
+    ffmpeg \
+    file \
+    git \
+    imagemagick \
+    libpq \
+    libressl \
+    libxml2 \
+    libxslt \
+    nodejs-current-npm \
+    nodejs-current \
+    protobuf \
+    ruby \
+    ruby-bigdecimal \
+    ruby-io-console \
+    ruby-irb \
+    ruby-json \
+    s6 \
+    su-exec \
+ && apk add -t build-dependencies \
+    build-base \
+    libffi-dev \
+    libxml2-dev \
+    libxslt-dev \
+    postgresql-dev \
+    protobuf-dev \
+    python \
+    ruby-dev \
+    ruby-rdoc \
+    tar \
+ && update-ca-certificates \
+ && wget -qO- https://github.com/${REPOSITORY}/archive/${VERSION}.tar.gz | tar xz --strip 1 \
+ && gem install bundler \
+ && bundle install --deployment --clean --no-cache --without test development \
+ && npm install -g npm@3 && npm install -g yarn \
+ && yarn --ignore-optional --pure-lockfile \
+ && SECRET_KEY_BASE=$(rake secret) rake assets:precompile \
+ && npm -g cache clean && yarn cache clean \
+ && mv public/assets /tmp/assets && mv public/packs /tmp/packs \
+ && apk del build-dependencies \
+ && rm -rf /tmp/* /var/cache/apk/*
+
+COPY rootfs /
+
+RUN chmod +x /usr/local/bin/* /etc/s6.d/*/* /etc/s6.d/.s6-svscan/*
+
+VOLUME /mastodon/public/system /mastodon/public/assets /mastodon/public/packs
+
+EXPOSE 3000 4000
+
+LABEL maintainer="Wonderfall <wonderfall@targaryen.house>" \
+      description="A GNU Social-compatible microblogging server"
+
+ENTRYPOINT ["/usr/local/bin/run"]
+CMD ["/bin/s6-svscan", "/etc/s6.d"]

mastodon/rootfs/etc/s6.d/.s6-svscan/finish

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+#!/bin/sh
+exit 0

mastodon/rootfs/etc/s6.d/sidekiq/run

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+#!/bin/sh
+cd /mastodon
+exec bundle exec sidekiq -c $SIDEKIQ_WORKERS -q default -q push -q pull -q mailers

mastodon/rootfs/etc/s6.d/streaming/run

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+#!/bin/sh
+cd /mastodon
+exec npm run start

mastodon/rootfs/etc/s6.d/web/run

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+#!/bin/sh
+cd /mastodon
+exec bundle exec rails s -p 3000 -b '0.0.0.0'

mastodon/rootfs/usr/local/bin/run

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+#!/bin/sh
+
+### 1. Adds local user (UID and GID are provided from environment variables).
+### 2. Moves precompiled assets into them.
+### 3. Updates permissions, except for ./public/system (should be chown on previous installations).
+###    NOTE : this can take a long time if overlay2 is the storage-driver (issue #3194).
+### 4. If $RUN_DB_MIGRATIONS is set to true, runs the database migrations task.
+### 5. Executes the command as that user.
+
+echo "
+---------------------------------------------
+     _____         _         _
+    |     |___ ___| |_ ___ _| |___ ___
+    | | | | .'|_ -|  _| . | . | . |   |
+    |_|_|_|__,|___|_| |___|___|___|_|_|
+
+A GNU Social-compatible microblogging server
+   https://github.com/tootsuite/mastodon
+    17j2g7vpgHhLuXhN4bueZFCvdxxieyRVWd
+---------------------------------------------
+User  ID : ${UID}
+Group ID : ${GID}
+---------------------------------------------
+"
+
+echo "Creating mastodon user..."
+addgroup -g ${GID} mastodon &>/dev/null
+adduser -h /mastodon -s /bin/sh -D -G mastodon -u ${UID} mastodon &>/dev/null
+
+echo "Moving assets to volumes..."
+mv /tmp/assets/* public/assets &>/dev/null
+mv /tmp/packs/* public/packs &>/dev/null
+
+echo "Updating permissions, this can take a while..."
+find /mastodon -path /mastodon/public/system -prune -o -not -user mastodon -not -group mastodon -print0 | xargs -0 chown -f mastodon:mastodon
+chown -R mastodon:mastodon /etc/s6.d
+
+if [ "$RUN_DB_MIGRATIONS" == "true" ]; then
+  echo "Running database migrations task..."
+  su-exec mastodon:mastodon rake db:migrate
+fi
+
+echo "Executing process..."
+if [ '$@' == '' ]; then
+    exec su-exec mastodon:mastodon /bin/s6-svscan /etc/s6.d
+else
+    exec su-exec mastodon:mastodon "$@"
+fi