title: Restrict access of other linux user to docker container
body: <p>I have two linux users, named as: ubuntu and my_user
  Now I build a simple Docker image and also run the Docker container 
  In my docker-compose.yml, I volume mount some of the files from local machine to the container, which were created by 'ubuntu' user.</p>
  
  <p>Now if I login by 'my_user', and access the docker container created by 'ubuntu' user using docker exec command, then I am able to access any files that are present in the container.</p>
  
  <p>My requirement is to restrict the access of 'my_user', to access the content of Docker container that was created by 'ubuntu' user.</p>