buildx failed with: ERROR: failed to build: failed to solve: process "/bin/sh -c echo \"=== Verifying fcitx5 addon loading ===\" && FCITX5_LOG=$(dbus-run-session -- timeout 20 fcitx5 2>&1 || true) && echo \"$FCITX5_LOG\" && echo \"$FCITX5_LOG\" | grep -q \"Loaded addon karukan\" && echo \"Addon load verified successfully.\"" did not complete successfully: exit code: 1