mand instructs Docker to run the <code>ratings</code> service on port <code>9080</code>.</p></li><li><p>Build a Docker image from the <code>Dockerfile</code>:</p><pre><code class=language-bash data-expandlinks=true data-repo=istio>$ docker build -t $USER/ratings .
...
Step 9/9 : CMD node /opt/microservices/ratings.js 9080
---&gt; Using cache
---&gt; 77c6a304476c
Successfully built 77c6a304476c
Successfully tagged user/ratings:latest
</code></pre></li><li><p>Run ratings in Docker. The following <a href=https