/proc/4/root/proc/4/task/4/root/proc
This explorer reads the filesystem of the server it runs on, so /workspace/user isn't present here. Browsing and the terminal still work against this server's own disk from /.
#subsys_name hierarchy num_cgroups enabledcpuset 6 1 1cpu 11 54 1cpuacct 11 54 1blkio 2 51 1memory 9 66 1devices 4 51 1freezer 8 4 1net_cls 7 1 1perf_event 10 1 1net_prio 7 1 1hugetlb 3 1 1pids 5 51 1