improved deployment time

Dockerfile

@@ -1,3 +1,4 @@
+# syntax=docker/dockerfile:1
 # LinkedIn Post Creation System - Docker Image
 FROM python:3.11-slim
 
@@ -17,8 +18,9 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 # Copy requirements first for better caching
 COPY requirements.txt .
 
-# Install Python dependencies
-RUN pip install --no-cache-dir -r requirements.txt
+# Install Python dependencies (CPU-only torch to avoid downloading 2GB CUDA binaries)
+RUN --mount=type=cache,target=/root/.cache/pip \
+    pip install --extra-index-url https://download.pytorch.org/whl/cpu -r requirements.txt
 
 # Copy application code
 COPY . .