create dockerfile and entrypoint for docker

Author: bbonislawski

Dockerfile

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+# This dockerfile is used to build sandbox image for docker clouds. It's not meant to be used in projects
+FROM ruby:2.4.0
+RUN apt-get update -qq && apt-get install -y build-essential libpq-dev nodejs
+RUN mkdir /spree
+WORKDIR /spree
+ADD . /spree
+RUN bundle install
+RUN bundle exec rake sandbox
+CMD ["sh", "docker-entrypoint.sh"]

docker-entrypoint.sh

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+#!/bin/bash
+# This is entrypoint for docker image of spree sandbox on docker cloud
+
+RAILS_ENV=development cd sandbox && bundle exec rails s -p 3000 -b '0.0.0.0'