title: node:latest for alpine, apk not found because sbin is not on path
body: <p>I am running a docker-compose file using node:latest.  I noticed an issue with the timezone that I am trying to fix.  Following an example I found online, I tried to install tzdata.  This is not working as I keep getting apk not found errors. After finding this stackoverflow.com question, <a href="https://stackoverflow.com/questions/40264279/docker-alpine-bin-sh-apk-not-found">Docker Alpine /bin/sh apk not found</a>, it seems to mirror my issue as I docker exec'ed into the container and found the apk command in the /sbin folder.  I tried to do the following to make it work but I am still not able to access apk.  From other articles I found, this seemed to be the way to resolve the issue but apk is still not found.</p>
  
  <pre><code>CMD export PATH=$PATH:$ADDITIONAL_PATH
  RUN apk add --no-cache tzdata
  ENV TZ=America/Chicago
  </code></pre>