fix: fix_permissions.sh fails on empty directory (#83)

This commit fixes
#82

Author: andriibratanin

image/fix_permissions.sh

@@ -26,7 +26,7 @@ if [[ -n ${GITEA_RUNNER_UID:-} ]]; then
 
     act_home=$(eval echo "~$act_user")
     chown "$GITEA_RUNNER_UID" "$act_home"
-    find "$act_home" -xdev -user "$effective_uid" -print0 | xargs -0 chown "$GITEA_RUNNER_UID"
+    find "$act_home" -xdev -user "$effective_uid" -print0 | xargs --no-run-if-empty -0 chown "$GITEA_RUNNER_UID"
   fi
 fi
 
@@ -38,7 +38,7 @@ if [[ -n ${GITEA_RUNNER_GID:-} ]]; then
 
     act_home=$(eval echo "~$act_user")
     chown ":$GITEA_RUNNER_GID" "$act_home"
-    find "$act_home" -xdev -group "$effective_gid" -print0 | xargs -0 chgrp "$GITEA_RUNNER_GID"
+    find "$act_home" -xdev -group "$effective_gid" -print0 | xargs --no-run-if-empty -0 chgrp "$GITEA_RUNNER_GID"
   fi
 fi