cryptpad user permissions

src/freedombone-app-cryptpad

     set_repo_commit $CRYPTPAD_DIR "cryptpad commit" "$CRYPTPAD_COMMIT" $CRYPTPAD_REPO
 
     cd $CRYPTPAD_DIR
-    chown -R cryptpad:cryptpad *
 
     systemctl start cryptpad
 }
 
     # an unprivileged user to run as
     useradd -d $CRYPTPAD_DIR/ cryptpad
+    chgrp -R ssl-cert /etc/letsencrypt
+    chmod -R g=rX /etc/letsencrypt
+    usermod -a -G ssl-cert cryptpad
 
     cd $CRYPTPAD_DIR
     git checkout $CRYPTPAD_COMMIT -b $CRYPTPAD_COMMIT