- Build the image from the Dockerfile above:
 
docker build --rm -t cberg-test .
- Run a container, sharing the host dir 
/root/foo: 
docker run --rm -v /root/foo:/foo cberg-test
- In another shell, write something to the socket (which was created in 
/root/fooby the container): 
echo 'hello docker' | socat - UNIX-CONNECT:/root/foo/bar.sock
- See the output of the container in the first shell:
 
hello docker
docker run --name mysql-server -t
-v /var/run/mysqld:/var/run/mysqld
-d mysql:5.7
--socket=/var/run/mysqld/mysqld.sock
It does not work well ,when i ru the command
docker logs mysql-server,then found this:[ERROR] Could not create unix socket lock file /var/run/mysqld/mysqld.sock.lock.