feat: Initialize Flask application with Redis session management, Docker build configuration, and updated gitignore.

Author: alvin000009238

.gitignore

@@ -37,13 +37,15 @@ venv.bak/
 # Application Data & Temporary Files
 grades_raw.json
 shared_grades/
+.flask_session/
 *.json
 !requirements.txt
 !.env.example
 !package.json
 !manifest.json
 *.md
 !README.md
+0_build_and_deploy.txt
 # Exclude specific JSONs but allow config templates if any
 
 # Large Files

app/__init__.py

@@ -33,11 +33,9 @@ def create_app():
 
     flask_env = os.environ.get('FLASK_ENV', '').lower()
     app_env = os.environ.get('APP_ENV', '').lower()
-    is_dev = flask_env in ('development', 'testing') or app_env in ('development', 'testing')
 
     try:
-        if is_dev:
-            redis_client.ping()
+        redis_client.ping()
         app.config['REDIS_CLIENT'] = redis_client
         app.config['SESSION_TYPE'] = 'redis'
         app.config['SESSION_REDIS'] = redis_client
@@ -47,6 +45,9 @@ def create_app():
         Session(app)
     except redis.exceptions.ConnectionError:
         app.config['REDIS_CLIENT'] = None
+        # 退回不使用 Redis session
+        app.config['SESSION_TYPE'] = 'null'
+        Session(app)
         print("WARNING: Redis not available. Using default cookie session for development.")
 
     app.config['TURNSTILE_SITE_KEY'] = os.environ.get('TURNSTILE_SITE_KEY', '')

docker-compose.yml

@@ -1,14 +1,17 @@
 services:
   app:
-    image: ghcr.io/${GHCR_IMAGE:-alvin000009238/school_grades}:latest
+    build: .
+    image: ghcr.io/${GHCR_IMAGE:-alvin000009238/grades}:latest
     environment:
       - PYTHONUNBUFFERED=1
       - SECRET_KEY=${SECRET_KEY}
       - CORS_ORIGINS=${CORS_ORIGINS}
-      - REDIS_URL=${REDIS_URL:-redis://redis:6379/0}
+      - REDIS_URL=redis://redis:6379/0
       - TURNSTILE_SITE_KEY=${TURNSTILE_SITE_KEY}
       - TURNSTILE_SECRET_KEY=${TURNSTILE_SECRET_KEY}
       - TZ=Asia/Taipei
+    ports:
+      - "5000:5000"
 
     depends_on:
       - redis