Fix docker compose ps command usage across scripts

Replace deprecated `docker compose ps | grep` patterns with the more reliable `docker compose ps --status running --services | grep` command. This ensures consistent container status checking across backup, restore, and update scripts.

Also fix regex pattern in update.sh for French "oui" validation.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

scripts/backup.sh

@@ -89,8 +89,10 @@ log "${BLUE}[$(date '+%Y-%m-%d %H:%M:%S')] Début de la sauvegarde${NC}"
 log "Backup name: $BACKUP_NAME"
 
 # Vérifier que les conteneurs sont en cours d'exécution
-if ! docker compose ps | grep -q 'gitea.*running'; then
+if ! docker compose ps --status running --services | grep -q '^gitea$'; then
     log "${RED}Erreur: Le conteneur Gitea n'est pas en cours d'exécution${NC}"
+    log "État actuel:"
+    docker compose ps
     exit 1
 fi