Update Dockerfile

Dockerfile

@@ -12,11 +12,9 @@ WORKDIR /app
 RUN apt-get update && apt-get install -y \
     build-essential \
     libssl-dev \
+    libffi-dev \
     && rm -rf /var/lib/apt/lists/*
 
-# Install mysqlclient dependencies if using mysqlclient instead of pymysql
-# Since we're using pymysql, no additional system dependencies are required
-
 # Copy the requirements file into the container
 COPY requirements.txt .