title: Display Version, container name, timestamp in Kibana with EFK
body: <p>I have a PHP app deployed with Dockerfile, using EFK stack (Elasticsearch, Fluent-d, and Kibana) and I'm using "Logger\FluentLogger"
  plugin to send the log to the elasticsearch.</p>
  
  <p><code>$logger = new FluentLogger(FLUENTD_ENDPOINT, FLUENTD_PORT);
  $logger -&gt; post("c", array("message"=&gt;"executed query: ..."));</code></p>
  
  <p>When I build the docker image I export two variables :</p>
  
  <p><code>RUN export SERVICE_VERSION=$(head -n 1 .version) &amp;&amp; export BUILD_TIMESTAMP=$(head -2 .version | tail -1)</code></p>
  
  <p>I want to write these two variable with every logging operation. I want also to display the container name like this:
  <a href="https://i.stack.imgur.com/8Ae6r.png" rel="nofollow noreferrer">output example</a></p>