Add other way to install Hugo on the image

Author: xap5xap

Dockerfile

@@ -3,10 +3,18 @@ FROM deis/go-dev
 RUN apt-get update
 
 # Ruby
-RUN apt-get install hugo ruby ruby-dev ruby-bundler curl apt-utils -y
+RUN apt-get install ruby ruby-dev ruby-bundler curl apt-utils -y
 RUN gem install sass --no-user-install
 RUN gem install mime-types:2.0 rake cucumber capybara selenium-webdriver rspec browserstack-local parallel_tests
 
+#Hugo - October 2017 build
+ENV HUGO_VERSION=0.30.2
+ADD https://github.com/gohugoio/hugo/releases/download/v${HUGO_VERSION}/hugo_${HUGO_VERSION}_Linux-64bit.tar.gz /tmp
+RUN tar -xf /tmp/hugo_${HUGO_VERSION}_Linux-64bit.tar.gz -C /tmp \
+    && mkdir -p /usr/local/sbin \
+    && mv /tmp/hugo /usr/local/sbin/hugo \
+    && rm -rf /tmp/hugo_${HUGO_VERSION}_linux_amd64
+
 # Node.JS
 RUN curl -sL https://deb.nodesource.com/setup_6.x | bash
 RUN apt-get install nodejs -y