title: Why docker container name has an random number at the end?
body: <p>I have a docker-compose.yml file as below (a piece of it):</p>
  
  <pre><code>version: '3.5'
  services:
      framework:
      image: ${DOCKER_REGISTRY}/gme/fmk:${COMPOSE_PROJECT_NAME}
      build: ./fmk
      ports:
        - "2020:2020"
        - "2025:2025"
        - "4999:4999"
      volumes:
        - ${FOLDER_ENV}/workspace/logs/framework:/var/log/gcti
        - ${FOLDER_ENV}/..:/usr/local/genesys/gsg_qaart
  </code></pre>
  
  <p>what I got is:</p>
  
  <pre><code>vagrant@docker:/repos/gsg_qaart/docker$ docker-compose ps
  ]              Name                             Command               State                                             
  Ports
  -----------------------------------------------------------------------------------------------------------------------------------------------------------------------
  callback_framework_1_df361f67842c   /bootstrap.sh                    Up      0.0.0.0:2020-&gt;2020/tcp, 0.0.0.0:2025-&gt;2025/tcp, 0.0.0.0:4999-&gt;4999/tcp, 5432/tcp
  </code></pre>
  
  <p>As you can see the name is weird, it supposes to be "callback_framwork_1", why there is a random number at the end?</p>
  
  <p>BTW, I'm using:</p>
  
  <pre><code>vagrant@docker:/repos/gsg_qaart/docker$ docker -v
  Docker version 18.09.0, build 4d60db4
  vagrant@docker:/repos/gsg_qaart/docker$ docker-compose -v
  docker-compose version 1.23.1, build b02f1306
  </code></pre>
  
  <p>Thanks.</p>