Document SELinux label requirements for the rootfs argument
When using the rootfs argument, SELinux systems fails silently
when the files are not properly labeled.
Related
@@ -646,6 +646,9 @@ If specified, the first argument refers to an exploded container on the file sys
This is useful to run a container without requiring any image management, the rootfs
of the container is assumed to be managed externally.
+Note: On `SELinux` systems, the rootfs needs the correct label, which is by default
+`unconfined_u:object_r:container_file_t`.
+
**--security-opt**=*option*
Security Options
