Docker buid issue

Machine-Backend/.env

@@ -6,14 +6,21 @@ PAYU_MERCHANT_SALT=DusXSSjqqSMTPSpw32hlFXF6LKY2Zm3y
 PAYU_SUCCESS_URL=http://localhost:4200/payment-success
 PAYU_FAILURE_URL=http://localhost:4200/payment-failure
 
+# Flask Configuration
 FLASK_ENV=production
+FLASK_APP=run.py
 
+# MySQL Configuration (for production/Docker)
 MYSQL_HOST=db
 MYSQL_USER=vendinguser
 MYSQL_PASSWORD=vendingpass
 MYSQL_DATABASE=vending
 
-SQLITE_DB_PATH=machines
+# SQLite Configuration (for development)
+SQLITE_DB_PATH=machines.db
+
+# SQLAlchemy Configuration
+SQLALCHEMY_ECHO=False
 
 BREVO_SMTP_EMAIL=smukeshsn2000@gmail.com
 BREVO_SMTP_KEY=your-brevo-smtp-key

Machine-Backend/Dockerfile

@@ -7,6 +7,11 @@ WORKDIR /app
 # Prevent Python from buffering stdout/stderr
 ENV PYTHONUNBUFFERED=1
 
+# Install mysql-client for database connectivity checks
+RUN apt-get update && \
+    apt-get install -y default-mysql-client curl && \
+    rm -rf /var/lib/apt/lists/*
+
 # Copy requirements first for better caching
 COPY requirements.txt .
 
@@ -28,4 +33,4 @@ ENV FLASK_RUN_PORT=5000
 EXPOSE 5000
 
 # Use Gunicorn for production
-CMD ["gunicorn", "--bind", "0.0.0.0:5000", "run:app"]
+CMD ["gunicorn", "--bind", "0.0.0.0:5000", "run:app"]

Machine-Backend/app/__init__.py

@@ -42,8 +42,9 @@ def create_app():
         if not all([mysql_host, mysql_user, mysql_password, mysql_db]):
             raise ValueError("Missing required MySQL environment variables")
         
+        # FIXED: Use port 3306 (internal Docker port, not the host port 3307)
         app.config['SQLALCHEMY_DATABASE_URI'] = (
-            f'mysql+pymysql://{mysql_user}:{mysql_password}@{mysql_host}:3307/{mysql_db}'
+            f'mysql+pymysql://{mysql_user}:{mysql_password}@{mysql_host}:3306/{mysql_db}'
         )
     else:
         sqlite_db_path = os.getenv('SQLITE_DB_PATH', 'machines.db')