Added Sample Cron Job to check working of Whenever Gem

Dockerfile

@@ -1,7 +1,7 @@
 # Dockerfile # Plots2
 # https://github.com/publiclab/plots2
 
-FROM ruby:2.3
+FROM ruby:2.3-jessie
 
 LABEL maintainer="Sebastian Silva <[email protected]>"
 LABEL description="This image deploys Plots2."
@@ -18,7 +18,7 @@ ENV PHANTOMJS_VERSION 2.1.1
 #    > /etc/apt/sources.list
 
 # Install dependencies
-RUN apt-get update -qq && apt-get install -y bundler libmysqlclient-dev ruby-rmagick libfreeimage3 nodejs-legacy npm wget procps cron
+RUN apt-get update -qq && apt-get install -y bundler libmysqlclient-dev ruby-rmagick libfreeimage3 nodejs-legacy npm wget procps cron make
 RUN wget https://github.com/Medium/phantomjs/releases/download/v$PHANTOMJS_VERSION/phantomjs-$PHANTOMJS_VERSION-linux-x86_64.tar.bz2 -O /tmp/phantomjs-$PHANTOMJS_VERSION-linux-x86_64.tar.bz2; tar -xvf /tmp/phantomjs-$PHANTOMJS_VERSION-linux-x86_64.tar.bz2 -C /opt ; cp /opt/phantomjs-$PHANTOMJS_VERSION-linux-x86_64/bin/* /usr/local/bin/
 RUN npm install -g bower
 

Makefile

@@ -1,3 +1,21 @@
+build:
+	cp config/database.yml.example config/database.yml
+	cp db/schema.rb.example db/schema.rb
+	docker-compose down --remove-orphans
+	docker-compose build
+
+deploy-container:
+	docker-compose run web sleep 5
+	docker-compose run web rake db:migrate
+	docker-compose run web bower install --allow-root
+	docker-compose run web bower update --allow-root
+	docker-compose run web rake assets:precompile
+	bash -c "test -e tmp/pids/server.pid && rm tmp/pids/server.pid"
+	docker-compose up -d
+	docker-compose exec -T web bash -c "echo 172.19.0.1 smtp >> /etc/hosts"	
+	docker-compose exec -T web bundle exec whenever --update-crontab
+	docker-compose exec -T web service cron start
+
 install-dev:
 	echo "Installing RubyGems"
 	bundle install --without production mysql

config/schedule.rb

@@ -18,3 +18,12 @@
 # end
 
 # Learn more: http://github.com/javan/whenever
+
+# Cron Job log file
+set :output, "#{Dir.pwd}/public/cron_log.log"
+
+# To simply print date into the log file for checking if cron job is working properly
+every 1.minutes do
+	puts Dir.pwd
+	command "date -u" #This will print utc time every 1 min in log/cron_log.log file
+end