Set DEBIAN_FRONTEND as 'noninteractive' to fix debconf warnings
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# Use Ruby 2.3.6 as base image
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FROM ruby:2.3.6
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ENV DEBIAN_FRONTEND noninteractive
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# Install essential Linux packages
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RUN apt-get update -qq && apt-get install -y build-essential libpq-dev postgresql-client nodejs imagemagick sudo libxss1 libappindicator1 libindicator7 unzip
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