Only remove group `www-data` if no other user is part of it

Thanks to kseistrup for spotting this issue.

1 files changed, 5 insertions, 1 deletions

diff --git a/caddy-full-bin.install b/caddy-full-bin.install
index ca6086f39a9e..460e1d974f15 100644
--- a/caddy-full-bin.install
+++ b/caddy-full-bin.install
@@ -10,7 +10,11 @@ post_upgrade() {
     systemctl daemon-reload
     if [ $(vercmp $2 0.9.3-5) -lt 0 ]; then
         userdel -f www-data
-        groupdel www-data
+
+        # only remove group if no other users are part of it
+        if [ -z "$(getent group www-data | sed 's/.*://')" ]; then
+            groupdel www-data
+        fi
         
         chown -R http:http /etc/ssl/caddy