Upgrade to 0.59.0

Dockerfile

@@ -5,7 +5,7 @@ RUN apt-get -qq update \
 	&& rm -rf /var/lib/apt/lists/* \
 	&& gem install asciidoctor pygments.rb
 
-ENV HUGO_VERSION 0.55.5
+ENV HUGO_VERSION 0.59.0
 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