Which command demonstrates overriding a container's default binaries by mounting the host's /bin directory?

Which command demonstrates overriding a container's default binaries by mounting the host's /bin directory?

• A. sudo podman run -it -v /bin:/bin image /bin/bash
• B. sudo podman run -it image /bin/bash
• C. docker run -it -v /bin:/bin image /bin/bash
• D. sudo podman run -v /usr/bin:/usr/bin image /bin/bash

Answer: (A)

Mounting the host’s /bin into the container’s /bin directory replaces the binaries that the container would normally use with the binaries from the host. This is done with a bind mount, where the host path and the container path are the same, so the container’s /bin is effectively masked by the host’s /bin. The command that demonstrates this uses Podman to run an interactive shell and includes a bind mount of /bin to /bin. By mounting /bin on the host into the container’s /bin, any binary you run from /bin inside the container comes from the host, illustrating the override. The other options either don’t mount /bin at all, mount a different path, or use Docker instead of Podman, so they don’t demonstrate overriding the container’s /bin in the same way.

Mounting the host’s /bin into the container’s /bin directory replaces the binaries that the container would normally use with the binaries from the host. This is done with a bind mount, where the host path and the container path are the same, so the container’s /bin is effectively masked by the host’s /bin.

The command that demonstrates this uses Podman to run an interactive shell and includes a bind mount of /bin to /bin. By mounting /bin on the host into the container’s /bin, any binary you run from /bin inside the container comes from the host, illustrating the override.

The other options either don’t mount /bin at all, mount a different path, or use Docker instead of Podman, so they don’t demonstrate overriding the container’s /bin in the same way.