![]() Then let’s check init process capabilities (busybox doesn’t have getpcaps): How to verify? you can run a busybox with -privileged enabled or not, first try enable it:ĭocker run -rm -it -privileged busybox sh This flag exists to allow special use-cases, like running Docker within Docker. In other words, the container can then do almost everything that the host can do. The -privileged flag gives all capabilities to the container, and it also lifts all the limitations enforced by the device cgroup controller. This is because by default a container is not allowed to access any devices ( /dev) on host, but a “privileged” container is given access to all devices on host. device=: Allows you to run devices inside the container without the -privileged flag.īy default, Docker containers are unprivileged and cannot, for example, run a Docker daemon inside a Docker container. ![]() privileged=false: Give extended privileges to this container ![]() ![]() In docker run command, there are some flags about runtime privilege and capabilities: This blog will focus on Capability in Docker container. I talk the basic and general knowlwdge about Capability.
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