Fix: Update Dockerfile for spaCy model small one

Dockerfile

@@ -2,20 +2,21 @@ FROM python:3.11-slim
 
 WORKDIR /app
 
-# Copy requirements first for better caching
+# Copy requirements
 COPY requirements.txt .
 
 # Install dependencies
-RUN pip install --no-cache-dir -r requirements.txt
+RUN pip install --no-cache-dir --upgrade pip && \
+  pip install --no-cache-dir -r requirements.txt
 
-# Download spaCy model for Presidio (required for PII detection)
-RUN python -m spacy download en_core_web_lg
+# Download spaCy model (use small model - it's sufficient)
+RUN python -m spacy download en_core_web_sm
 
-# Copy the entire backend
+# Copy application
 COPY . .
 
-# Expose port 7860 (Hugging Face Spaces default)
+# Expose port
 EXPOSE 7860
 
-# Run the application
+# Run
 CMD ["python", "src/main.py"]