M23: automate verified database backups

deploy/unraid/verify-postgres-backups.sh

@@ -0,0 +1,12 @@
+#!/bin/sh
+set -eu
+
+destination="${1:-backups/postgres}"
+case "$destination" in ""|"/"|".") echo "Unsafe backup destination: $destination" >&2; exit 1;; esac
+latest="$(find "$destination" -maxdepth 1 -type f -name 'mobilityops-*.dump' | sort -r | head -n 1)"
+[ -n "$latest" ] || { echo "No MobilityOps backup found" >&2; exit 1; }
+[ -f "$latest.sha256" ] || { echo "Checksum missing for $latest" >&2; exit 1; }
+(cd "$destination" && sha256sum -c "$(basename "$latest.sha256")")
+docker compose -p "${COMPOSE_PROJECT_NAME:-mobilityops}" \
+  -f compose.yaml -f compose.unraid.yaml exec -T db pg_restore --list < "$latest" > /dev/null
+printf 'Verified: %s\n' "$latest"