chore(diun): check for updates once a day at midnight UTC

diun/.env.example

@@ -1,7 +1,7 @@
 DIUN_NOTIF_TELEGRAM_TOKEN=
 DIUN_NOTIF_TELEGRAM_CHATIDS=
 DIUN_PROVIDERS_DOCKER_WATCHBYDEFAULT=true
-DIUN_WATCH_SCHEDULE=0 */6 * * *
+DIUN_WATCH_SCHEDULE=0 0 * * *
 DIUN_WATCH_WORKERS=10
 DIUN_WATCH_JITTER=30s
 TZ=UTC

diun/README.md

@@ -44,7 +44,7 @@ fail fast if unset. Everything else has a working default.
 | `DIUN_NOTIF_TELEGRAM_TOKEN` | — | Bot token from @BotFather |
 | `DIUN_NOTIF_TELEGRAM_CHATIDS` | — | Comma-separated chat ids to notify |
 | `DIUN_PROVIDERS_DOCKER_WATCHBYDEFAULT` | `true` | Watch every container without per-container labels |
-| `DIUN_WATCH_SCHEDULE` | `0 */6 * * *` | Cron for the watch cycle |
+| `DIUN_WATCH_SCHEDULE` | `0 0 * * *` | Cron for the watch cycle — once a day at midnight `TZ` |
 | `DIUN_WATCH_WORKERS` | `10` | Parallel registry lookups |
 | `DIUN_WATCH_JITTER` | `30s` | Random delay before each job |
 | `TZ` | `UTC` | Timezone for the schedule and log timestamps |

diun/compose.yml

@@ -13,7 +13,7 @@ services:
       DIUN_NOTIF_TELEGRAM_TOKEN: ${DIUN_NOTIF_TELEGRAM_TOKEN:?required}
       DIUN_NOTIF_TELEGRAM_CHATIDS: ${DIUN_NOTIF_TELEGRAM_CHATIDS:?required}
       DIUN_DB_PATH: /data/diun.db
-      DIUN_WATCH_SCHEDULE: "${DIUN_WATCH_SCHEDULE:-0 */6 * * *}"
+      DIUN_WATCH_SCHEDULE: "${DIUN_WATCH_SCHEDULE:-0 0 * * *}"
       DIUN_WATCH_WORKERS: "${DIUN_WATCH_WORKERS:-10}"
       DIUN_WATCH_JITTER: "${DIUN_WATCH_JITTER:-30s}"
       TZ: "${TZ:-UTC}"