Install and verfiy Hugo in Docker

gohugo.Dockerfile

#****************       HUGO      *********************************************
ENV HUGO_VERSION="0.55.5"

RUN set -ex \
  && curl -fsSLO --compressed "https://github.com/gohugoio/hugo/releases/download/v${HUGO_VERSION}/hugo_extended_${HUGO_VERSION}_Linux-64bit.tar.gz" \
  && curl -fsSLO --compressed "https://github.com/gohugoio/hugo/releases/download/v${HUGO_VERSION}/hugo_extended_${HUGO_VERSION}_checksums.txt" \
  && grep " hugo_extended_${HUGO_VERSION}_Linux-64bit.tar.gz\$" hugo_extended_${HUGO_VERSION}_checksums.txt | sha256sum -c - \
  && tar -xzf hugo_extended_${HUGO_VERSION}_Linux-64bit.tar.gz -C /usr/local/bin/ \
  && rm hugo_extended_${HUGO_VERSION}_Linux-64bit.tar.gz \
  && rm hugo_extended_${HUGO_VERSION}_checksums.txt \
  && hugo version
#****************   END HUGO      *********************************************

This is what I really needed. It seems that there is no checksums file only for extended version. So, I migrated this gist to 0.75.1. Thank you for your great knowledge.