Update PDF to Markdown converter API with NVIDIA L4 support

Dockerfile

@@ -31,10 +31,13 @@ WORKDIR /app
 # Copy requirements first
 COPY requirements.txt .
 
-# Install Python dependencies
+# Install PyTorch dependencies first
 RUN pip install --no-cache-dir --upgrade pip && \
-    pip install --no-cache-dir -r requirements.txt && \
-    pip install --no-cache-dir torch==2.5.1+cu118 torchvision torchaudio --extra-index-url https://download.pytorch.org/whl/cu118
+    pip install --no-cache-dir torch==2.5.1+cu118 torchvision==0.15.2+cu118 torchaudio==2.0.2 --extra-index-url https://download.pytorch.org/whl/cu118
+
+# Install remaining Python dependencies
+RUN grep -v "torch\|torchvision\|torchaudio" requirements.txt > requirements_no_torch.txt && \
+    pip install --no-cache-dir -r requirements_no_torch.txt
 
 # Create output directories
 RUN mkdir -p /app/output/images && \

requirements.txt

@@ -1,7 +1,8 @@
 fastapi==0.104.1
 uvicorn==0.23.2
 python-multipart==0.0.6
-marker-pdf==1.2.4
-torch==2.5.1
-torchvision==0.15.2
-torchaudio==2.0.2 
+marker-pdf==1.6.2
+# Torch packages are installed directly in Dockerfile
+# torch==2.5.1
+# torchvision==0.15.2
+# torchaudio==2.0.2