title: docker: Got permission denied while trying to connect to the Docker daemon socket at unix:
body: <p>I tried this</p>
  
  <pre><code>docker run --rm -it -p 2181:2181 -p 8081:8081 -p 8082:8082 -p 8083:8083 -p 9092:9092 -e ADV_HOST=127.0.0.1 landoop/fast-data-dev
  </code></pre>
  
  <p>I got error</p>
  
  <pre><code>docker: Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Post http://%2Fvar%2Frun%2Fdocker.sock/v1.35/containers/create: dial unix /var/run/docker.sock: connect: permission denied.
  </code></pre>
  
  <p>I have checked if daemon is running</p>
  
  <pre><code>● docker.service - Docker Application Container Engine
     Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)
     Active: active (running) since уто 2018-01-23 10:52:50 CET; 2h 14min ago
       Docs: https://docs.docker.com
   Main PID: 11082 (dockerd)
  </code></pre>
  
  <p>This is my /etc/default/docker</p>
  
  <pre><code># Customize location of Docker binary (especially for development testing).
  #DOCKERD="/usr/local/bin/dockerd"
  
  # Use DOCKER_OPTS to modify the daemon startup options.
  #DOCKER_OPTS="--dns 8.8.8.8 --dns 8.8.4.4"
  
  # If you need Docker to use an HTTP proxy, it can also be specified here.
  #export http_proxy="http://127.0.0.1:3128/"
  
  # This is also a handy place to tweak where Docker's temporary files go.
  #export DOCKER_TMPDIR="/mnt/bigdrive/docker-tmp"
  </code></pre>
  
  <p>How to edit docker_opts to solve the problem I have?</p>