title: How to customize map style in openmaptiles server
body: <p>I'm trying to apply my custom map style to an evaluation version of <code>OpenMapTile server</code> (<a href="https://hub.docker.com/r/klokantech/openmaptiles-server/" rel="noreferrer">klokantech/openmaptiles-server</a>) on Linux which is running in Docker.  </p>
  
  <p>I used the online version of <code>Maputnik</code> to edit the map in <code>OSM-Bright style</code>. Then I downloaded the modified JSON but I'm not sure how to apply this custom style to the my <code>OpenMapTile server</code>. </p>
  
  <p>I logged into the <code>Linux</code> in <code>Docker container</code> and found the corresponding <code>style.json</code> file, but my changes applied will be lost whenver the container is restarted. Could anyone tell what am I missing?</p>