How to mount a host directory in a Docker container

Question

I am trying to mount a host directory into a Docker container so that any updates done on the host is reflected into the Docker containers.

Where am I doing somethin

Answer 1

I found that any directory laying under system directive like /var, /usr, /etc could not be mount under the container.

The directive should be at user's space -v switch instructs docker daemon to mount local directory to the container, for example:

docker run -t -d -v /{local}/{path}:/{container}/{path} --name {container_name} {imagename}