diff --git a/Dockerfile b/Dockerfile
index d325e73..6eee288 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,7 +8,8 @@ ADD requirements /requirements
 
 RUN mkdir -p logs/ && \
     apt update && \
-    apt install -y libpq5 procps && \
-    pip install -r /requirements/live.txt
+    apt install -y libpq5 procps cron && \
+    pip install -r /requirements/live.txt && \
+    echo "30 */8 * * * python manage.py snap_up_health_check" >> /var/spool/cron/crontabs/root
 
-CMD nohup python manage.py continue_snap_up & gunicorn --bind=0.0.0.0:8000 --timeout=300 --keep-alive=60 src.wsgi:application
+CMD nohup python manage.py continue_snap_up & cron && gunicorn --bind=0.0.0.0:8000 --timeout=300 --keep-alive=60 src.wsgi:application
diff --git a/README.md b/README.md
index 8620a4a..a343ad2 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,8 @@
-# Snap Up THSR (Work in progress)
+# Snap Up THSR
 
 __!!此專案為純研究用途，請勿用於不當交易行為!!__
 
-這是一份自動化高鐵購票系統的後端程式碼
+這是一份自動化高鐵購票系統，使用 Django 後台進行使用者管理與訂票提單系統，協助完成訂票的最後一哩路。
 
 使用技術：
 - Django
@@ -10,4 +10,4 @@ __!!此專案為純研究用途，請勿用於不當交易行為!!__
 
 本系統已實踐會員系統與基礎購票功能，未來將會陸續新增以下功能：
 1. 多種類的自動購票策略
-2. 疏運期間售票時間調整
+2. 疏運期間售票提醒
diff --git a/src/booking/admin.py b/src/booking/admin.py
index ac7febf..ab2ea26 100644
--- a/src/booking/admin.py
+++ b/src/booking/admin.py
@@ -1,8 +1,7 @@
 from django.contrib import admin
 
 from basis.admin import ForeignKeyLinksMixin
-from user.admin import UserAdminMixin, UserFilter
-from user.models import User
+from user.admin import UserAdminMixin
 
 # Register your models here.
 from .models import THSRTicket, BookingRequest
diff --git a/src/booking/management/commands/snap_up_health_check.py b/src/booking/management/commands/snap_up_health_check.py
new file mode 100644
index 0000000..6d675bf
--- /dev/null
+++ b/src/booking/management/commands/snap_up_health_check.py
@@ -0,0 +1,36 @@
+from django.conf import settings
+from django.core.management.base import BaseCommand
+from django.core.mail import send_mail
+from basis.logger import log
+
+
+def count_lines(filename: str) -> int:
+    with open(filename, 'r') as file:
+        lines = file.readlines()
+    return len(lines)
+
+
+def clear_log(filename: str):
+    with open(filename, 'w') as file:
+        file.write('')
+
+
+LOG_PATH = '/src/logs/django.log'
+
+
+class Command(BaseCommand):
+    help = 'Check the health of the application'
+
+    def handle(self, *args, **options):
+        lines = count_lines(LOG_PATH)
+        if lines:
+            clear_log(LOG_PATH)
+            log.info('Snap up health check: OK')
+            return
+
+        send_mail(
+            subject='Snap Up THSR 工作排程警告',
+            message='Snap Up THSR 的工作排程已久無運作，記得去檢查一下！',
+            from_email=settings.EMAIL_HOST_USER,
+            recipient_list=['arcade0425@gmail.com'],
+        )
diff --git a/src/user/admin.py b/src/user/admin.py
index 074f7a6..0b93b97 100644
--- a/src/user/admin.py
+++ b/src/user/admin.py
@@ -72,21 +72,6 @@ def save_model(self, request, obj, form, change):
         super().save_model(request, obj, form, change)
 
 
-class UserFilter(admin.SimpleListFilter):
-    title = ('使用者帳號')
-    parameter_name = 'user'
-
-    def lookups(self, request, model_admin):
-        if request.user.is_superuser:
-            return [(user.id, user.email) for user in User.objects.all()]
-        return [(request.user.id, request.user.email)]
-
-    def queryset(self, request, queryset):
-        if self.value():
-            return queryset.filter(user__id=self.value())
-        return queryset
-
-
 class CustomUserAdmin(UserAdmin):
     # Update the list of fields to display in the admin interface.
     list_display = ('email', 'personal_id', 'phone', 'buy_discount_ticket', 'use_tgo_account')