How to run command from inside of docker

General Discussions
1

Hey, everybody!

Is there an ability to run a non docker command from inside the container?

For example i have a php container. And inside a php script i want to execute a command via exec() php function that would work outside the container.

For example inside php container i want to run command “service cron restart” and this command should work in linux OS in which docker is installed (not inside the container).

2

So basicly you asking if there is known exploit to break out of the container…

You might be better of to use a unix domain socket created outside your container, mount it in your container, make your containerized php process write the commands into the socket, then implement a client (needs to run directly on the host) that reads data from the sockets and does the command execution.

3

yes, i’ve tried to mount docker.sock into container, but i do not understand how to work with it, so that it would run a commsn outside the container… (((

Is there any example or manual how to work with it? Better example of course ))))

4

Not from the top of my head. Google is your friend ^^

Also: do not try to abuse the docker.sock, you will need to create your own socket.