Docker and Volumes nocopy
<p>I want to mount a directory from my host to a Docker container, and I want to make some modifications inside the container. But, when I modify the content on the mounted point, the changes are also reflected on the host.</p>

<p>For example:</p>

<pre><code>$ docker run -d --name webserver01 -v /home/guest/app:/app
</code></pre>

<p>After which I made some change inside the container in /app</p>

<pre><code>$ docker exec -ti webserver01 'touch /app/test.txt'
</code></pre>

<p>The file test.txt is created on my host and inside the container (the idea is to only create the file inside the container)</p>

<p>I tried to use the flag <code>nocopy</code> but I have this error:</p>

<pre><code>$ docker run -d --name webserver01 -v /home/guest/app:/app:nocopy
docker: Error response from daemon: Invalid bind mount spec "/home/guest/app:/app:nocopy": invalid mode: nocopy.
</code></pre>

<p>Docker version</p>

<pre><code>$ docker --version
Docker version 1.11.1, build 5604cbe/1.11.1
</code></pre>

<p>Thanks for the help!</p>