Hugo build

Dockerfile

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+FROM debian:stretch
+
+RUN apt-get -qq update \
+	&& DEBIAN_FRONTEND=noninteractive apt-get -qq install -y --no-install-recommends python-pygments git ca-certificates ruby \
+	&& rm -rf /var/lib/apt/lists/* \
+	&& gem install asciidoctor pygments.rb
+
+ENV HUGO_VERSION 0.55.5
+ENV HUGO_BINARY hugo_extended_${HUGO_VERSION}_Linux-64bit.deb
+
+ADD https://github.com/gohugoio/hugo/releases/download/v${HUGO_VERSION}/${HUGO_BINARY} /tmp/hugo.deb
+RUN dpkg -i /tmp/hugo.deb \
+	&& rm /tmp/hugo.deb