Add docker compose for production deployments

Dockerfile

@@ -0,0 +1,24 @@
+FROM xqdocker/ubuntu-ruby-2.0
+
+RUN apt-get update && \
+    apt-get install -y nodejs build-essential libpq-dev sqlite3 libsqlite3-dev --no-install-recommends &&  \
+    rm -rf /var/lib/apt/lists/* && \
+    echo "user:x:1000:1000:user:/:/sbin/nologin" >> /etc/passwd
+
+WORKDIR /app
+
+COPY Gemfile Gemfile
+COPY Gemfile.lock Gemfile.lock
+
+RUN bundle config build.nokogiri --use-system-libraries && \
+            bundle install --jobs=3 --retry=3
+
+COPY . /app
+
+EXPOSE 3000
+
+RUN chown -R user /app
+
+USER user
+
+CMD ["rails", "server", "-b", "0.0.0.0"]

config/application.rb

@@ -4,9 +4,9 @@
 
 if defined?(Bundler)
   # If you precompile assets before deploying to production, use this line
-  Bundler.require(*Rails.groups(:assets => %w(development test)))
+  # Bundler.require(*Rails.groups(:assets => %w(development test)))
   # If you want your assets lazily compiled in production, use this line
-  # Bundler.require(:default, :assets, Rails.env)
+  Bundler.require(:default, :assets, Rails.env)
 end
 
 module Labtool

config/environments/production.rb

@@ -9,7 +9,7 @@
   config.action_controller.perform_caching = true
 
   # Disable Rails's static asset server (Apache or nginx will already do this)
-  config.serve_static_assets = false
+  config.serve_static_assets = true
 
   # Compress JavaScripts and CSS
   config.assets.compress = true

docker-compose.yml

@@ -0,0 +1,11 @@
+version: "3.2"
+services:
+  web:
+    build: .
+    command: rails s --binding 0.0.0.0
+    ports:
+      - "3000:3000"
+    environment:
+      - RAILS_ENV=production
+    stdin_open: true
+    tty: true