diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..bb03ec4
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,49 @@
+# Python cache
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+*.egg-info/
+.pytest_cache/
+
+# Virtual environments
+.venv/
+venv/
+ENV/
+env/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# Git
+.git/
+.gitignore
+.gitattributes
+
+# Documentation
+*.md
+!README.md
+
+# Test files
+tests/
+test_*.py
+*_test.py
+
+# GPX files in assets (exclude user test files)
+hiking_assistant/assets/*.gpx
+
+# macOS
+.DS_Store
+
+# Archives
+*.tar
+*.tar.gz
+*.zip
+
+# Logs
+*.log
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 06e08fe..0ba3096 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -6,6 +6,7 @@ repos:
     rev: v4.3.0
     hooks:
       - id: check-added-large-files
+        args: ["--maxkb=2048"]
       - id: check-yaml
       - id: check-docstring-first
 
diff --git a/hiking_assistant/assets/background_op70.png b/hiking_assistant/assets/background_op70.png
new file mode 100644
index 0000000..0819b59
Binary files /dev/null and b/hiking_assistant/assets/background_op70.png differ
diff --git a/hiking_assistant/assets/config.yaml b/hiking_assistant/assets/config.yaml
index b86d025..79100f9 100644
--- a/hiking_assistant/assets/config.yaml
+++ b/hiking_assistant/assets/config.yaml
@@ -2,7 +2,7 @@ app:
   page_title: 臺灣登山小幫手
   page_favicon_path: ./assets/favicon_compressed.jpg
   page_footer_text: ⚠️ 本服務提供之資訊僅供規劃參考，山區氣候瞬息萬變，請務必依據現場狀況與自身能力進行風險評估<br>Made with ❤️ by <a href="https://gitea.guineapig.love/deng">deng</a>
-  page_background_path: ./assets/background.jpg
+  page_background_path: ./assets/background_op70.jpg
   altitude_sickness:
     elevation_threshold: 2100
     warning_text: 此路線海拔較高，請留意[高山症](https://www.ysnp.gov.tw/StaticPage/MountainSickness)發生風險
diff --git a/hiking_assistant/map.py b/hiking_assistant/map.py
index 21d1747..01b944a 100644
--- a/hiking_assistant/map.py
+++ b/hiking_assistant/map.py
@@ -95,7 +95,7 @@ class MapRenderer:
                 fill=True,
                 fill_color='blue',
                 fill_opacity=0.7,
-                popup=f'<b>起點</b><br>海拔: {start_point[2]} m',
+                popup=folium.Popup(f'<b>起點</b><br>海拔: {start_point[2]} m', max_width=200),
                 tooltip='起點',
             ).add_to(route_map)
 
@@ -108,7 +108,7 @@ class MapRenderer:
                 fill=True,
                 fill_color='blue',
                 fill_opacity=0.7,
-                popup=f'<b>終點</b><br>海拔: {end_point[2]} m',
+                popup=folium.Popup(f'<b>終點</b><br>海拔: {end_point[2]} m', max_width=200),
                 tooltip='終點',
             ).add_to(route_map)