/etc/coolwsd$ ls -al
total 136
drwxr-xr-x 2 root root 4096 17 fév 09:26 .
drwxr-xr-x 165 root root 12288 20 fév 10:59 ..
-rw-r--r-- 1 root root 29390 18 déc 15:30 coolkitconfig.xcu
-rw-r----- 1 cool cool 39287 2 fév 22:51 coolwsd.xml
-rw-r----- 1 cool cool 38598 27 déc 20:44 coolwsd.xml.dpkg-old
-rw------- 1 cool root 1675 27 déc 18:07 proof_key
-rw-r--r-- 1 root root 426 27 déc 18:07 proof_key.pub
But how ? as I never had to use any certificate with CODE as the SSL part is only on the reverse proxy public side !