title: /bin/bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8)
body: <p>I'm receiving the error in the title and I'm not sure why. I'm trying to run a docker container in Unraid. The dockerfile code is down below if anyone would like to critique.</p>
  <pre><code>ENV DEBIAN_FRONTEND=noninteractive \
  LANG=en_US.UTF-8 \
  LANGUAGE=en_US.UTF-8 \
  LC_ALL=en_US.UTF-8 \
  TERM=xterm \
  TZ=:/etc/localtime \
  PATH=$PATH:/usr/local/go/bin \
  GOBIN=/go/bin \
  APP=/go/src/smugmug-backup
  
  RUN sed -e &quot;/deb-src/d&quot; -i /etc/apt/sources.list \
  &amp;&amp; apt-get update \
  &amp;&amp; apt-get install --no-install-recommends --yes \
      ca-certificates \
  &amp;&amp; apt-get clean \
  &amp;&amp; rm -rf /.root/cache \
  &amp;&amp; rm -rf /var/lib/apt/lists/*
  </code></pre>