/proc/self/root/proc/4/root/proc/4/root/proc/2/root/proc/2
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 /.
11:pids:/10:devices:/9:freezer:/8:memory:/7:perf_event:/6:cpuset:/5:cpu,cpuacct:/4:blkio:/3:hugetlb:/2:net_cls,net_prio:/1:name=systemd:/