Add file into hidden folder
<p>I am trying to add a file from the host machine to the container into a hidden folder but it does not seem to be working. This is my Dockerfile:</p>

<pre><code>FROM frekele/gradle:2.14.1-jdk8

MAINTAINER Fran Garcia &lt;myemail@email.com&gt;

ADD gradle.properties /root/.gradle/gradle.properties

# Run
CMD ["ls", "/root/.gradle/gradle.properties"]
</code></pre>

<p>But the file is not added. I can add this file to any other folder but not to a hidden one. Does anybody have any idea why this happens or how to fix it?</p>