Dockerfile for production

Dockerfile

@@ -1,40 +1,22 @@
-# Based on ruby image, packed with a lot of development dependencies
 FROM ruby:2.3
 
-# Install all dependencies for development and testing
 RUN apt-get update && \
     apt-get install --no-install-recommends -y \
-      mysql-client \
+      cron \
       libv8-dev \
       libmagic-dev \
-      libmysqlclient-dev \
-      xvfb \
-      iceweasel && \
+      libmysqlclient-dev && \
     rm -rf /var/lib/apt/lists/* && \
     apt-get clean
 
-# Run app and all commands as user 'app'. This avoids changing permissions
-# for files in mounted volume.
-RUN adduser --gecos GECOS --disabled-password --shell /bin/bash app
-USER app
+ENV RAILS_ENV=production
 
-# Create an directory to store the application code.
-RUN mkdir /home/app/src
-WORKDIR /home/app/src
-
-# Copy plugins before the rest to allow bundler loading gemspecs
-# TODO: Move plugins to gems and add them to Gemfile instead
-COPY plugins ./plugins
-
-# Add Gemfiles and run bundle.
-COPY Gemfile Gemfile.lock ./
-ENV BUNDLE_JOBS=4 BUNDLE_PATH=/home/app/bundle \
-    BUNDLE_APP_CONFIG=/home/app/bundle/config
-RUN bundle install
-
-# Copy the application code. (Excluded files see .dockerignore)
+WORKDIR /usr/src/app
 COPY . ./
+RUN bundle install --without development --without test && \
+    whenever --update-crontab
 
 EXPOSE 3000
 
+ENTRYPOINT ["./docker-entrypoint.sh"]
 CMD ["rails", "server", "--binding", "0.0.0.0"]

docker-entrypoint.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+set -e
+
+if [ -f tmp/pids/server.pid ]; then
+  rm tmp/pids/server.pid
+fi
+
+exec "$@"