batman (working version kinda)

config/Dockerfile

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+FROM python:3.11-slim
+
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+  gcc \
+  libpq-dev \
+  && apt-get clean \
+  && rm -rf /var/lib/apt/lists/*
+
+# Install Python dependencies
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+RUN pip install gunicorn psycopg2-binary redis
+
+# Copy application code
+COPY . .
+
+# Set environment variables
+ENV PYTHONUNBUFFERED=1
+ENV PYTHONDONTWRITEBYTECODE=1
+
+# Run the application
+CMD ["gunicorn", "-w", "4", "-b", ":8000", "app:create_app()"] 

config/docker-compose.yml

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+version: '3'
+
+services:
+  app:
+    build:
+      context: ..
+      dockerfile: config/Dockerfile
+    command: gunicorn -w 4 -b :8000 "app:create_app()" --access-logfile - --error-logfile -
+    volumes:
+      - ../app:/app/app
+    environment:
+      - FLASK_APP=app
+      - FLASK_ENV=production
+      - DATABASE_URL=postgresql://user:password@db:5432/app_db
+      - REDIS_URL=redis://redis:6379/0
+      - SECRET_KEY=${SECRET_KEY:-default_secret_key_change_in_production}
+    depends_on:
+      - db
+      - redis
+    restart: unless-stopped
+
+  nginx:
+    image: nginx:1.25
+    ports:
+      - "80:80"
+      - "443:443"
+    volumes:
+      - ./nginx/nginx.conf:/etc/nginx/nginx.conf
+      - ./nginx/conf.d:/etc/nginx/conf.d
+      - ./nginx/ssl:/etc/nginx/ssl
+    depends_on:
+      - app
+    restart: unless-stopped
+
+  db:
+    image: postgres:15
+    environment:
+      POSTGRES_USER: user
+      POSTGRES_PASSWORD: password
+      POSTGRES_DB: app_db
+    volumes:
+      - pg_data:/var/lib/postgresql/data
+    restart: unless-stopped
+
+  redis:
+    image: redis:7
+    volumes:
+      - redis_data:/data
+    restart: unless-stopped
+
+volumes:
+  pg_data:
+  redis_data:

config/settings.py

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+import os
+from datetime import timedelta
+
+basedir = os.path.abspath(os.path.dirname(__file__))
+
+class Config:
+    """Base config."""
+    SECRET_KEY = os.environ.get('SECRET_KEY', 'dev-key-placeholder')
+    SQLALCHEMY_TRACK_MODIFICATIONS = False
+    SESSION_COOKIE_SECURE = True
+    SESSION_COOKIE_HTTPONLY = True
+    REMEMBER_COOKIE_DURATION = timedelta(days=14)
+    PERMANENT_SESSION_LIFETIME = timedelta(days=1)
+    
+    @staticmethod
+    def init_app(app):
+        pass
+
+class DevelopmentConfig(Config):
+    DEBUG = True
+    SESSION_COOKIE_SECURE = False
+    SQLALCHEMY_DATABASE_URI = os.environ.get('DEV_DATABASE_URL') or \
+        'sqlite:///' + os.path.join(basedir, '..', 'instance', 'development.db')
+
+class TestingConfig(Config):
+    TESTING = True
+    SQLALCHEMY_DATABASE_URI = os.environ.get('TEST_DATABASE_URL') or \
+        'sqlite:///' + os.path.join(basedir, '..', 'instance', 'testing.db')
+    WTF_CSRF_ENABLED = False
+
+class ProductionConfig(Config):
+    SQLALCHEMY_DATABASE_URI = os.environ.get('DATABASE_URL') or \
+        'sqlite:///' + os.path.join(basedir, '..', 'instance', 'production.db')
+    
+    @classmethod
+    def init_app(cls, app):
+        Config.init_app(app)
+        
+        # Production-specific logging
+        import logging
+        from logging.handlers import RotatingFileHandler
+        log_dir = os.path.join(basedir, '..', 'logs')
+        os.makedirs(log_dir, exist_ok=True)
+        
+        file_handler = RotatingFileHandler(
+            os.path.join(log_dir, 'app.log'),
+            maxBytes=10485760,  # 10MB
+            backupCount=10
+        )
+        file_handler.setFormatter(logging.Formatter(
+            '%(asctime)s %(levelname)s: %(message)s [in %(pathname)s:%(lineno)d]'
+        ))
+        file_handler.setLevel(logging.INFO)
+        app.logger.addHandler(file_handler)
+        app.logger.setLevel(logging.INFO)
+        app.logger.info('App startup')
+
+config = {
+    'development': DevelopmentConfig,
+    'testing': TestingConfig,
+    'production': ProductionConfig,
+    
+    'default': DevelopmentConfig
+}