self-update no longer fails at the updater step on baseline (old x86_64) images

src/lib/server/updater-image-core.ts

@@ -0,0 +1,14 @@
+/**
+ * Which dockhand-updater sidecar image self-update should launch.
+ *
+ * The default updater is Wolfi-based (compiled for x86-64-v2). On old x86_64 CPUs
+ * without v2 - the same hardware that runs the baseline Dockhand image
+ * (DOCKHAND_VARIANT=baseline) - the Wolfi updater can't exec and Docker reports exit
+ * 127 at "Launching updater", so self-update is broken. Those hosts must pull the
+ * `-baseline` (Alpine/musl) updater instead, mirroring the backup helper's variant
+ * split (see restic.ts HELPER_VARIANT_SUFFIX).
+ */
+export function updaterImageForVariant(variant: string | undefined): string {
+	const suffix = variant === 'baseline' ? '-baseline' : '';
+	return `fnsys/dockhand-updater:latest${suffix}`;
+}