Update Dockerfile

Dockerfile

@@ -1,4 +1,4 @@
-# Nexus-Core Inference - Lightweight & Fast
+# Nexus-Core Inference - Fixed Build
 # HF Spaces CPU (2 vCPU, 16GB RAM)
 
 FROM python:3.10-slim
@@ -15,31 +15,41 @@ RUN apt-get update && apt-get install -y \
 COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 
-# Create folders
+# Create ALL necessary folders BEFORE copying files
 RUN mkdir -p /app/models /app/engine
 
-# Copy code
+# Copy application files
 COPY app.py .
-COPY engine/ ./engine/
 
-# Download Nexus-Core model
+# Copy engine folder (if it exists)
+COPY engine/__init__.py ./engine/__init__.py
+COPY engine/search.py ./engine/search.py
+
+# Download Nexus-Core model from HuggingFace
 RUN python -c "from huggingface_hub import hf_hub_download; \
+    print('Downloading Nexus-Core model...'); \
     hf_hub_download( \
         repo_id='GambitFlow/Nexus-Core', \
         filename='nexus_core.onnx', \
         local_dir='/app/models', \
         local_dir_use_symlinks=False \
-    )"
+    ); \
+    print('Download complete!')"
 
-# Verify
-RUN ls -lh /app/models/nexus_core.onnx
+# Verify model file exists
+RUN ls -lh /app/models/ && \
+    test -f /app/models/nexus_core.onnx && \
+    echo "✅ Model file verified" || \
+    (echo "❌ Model file missing!" && exit 1)
 
 EXPOSE 7860
 
+# Environment variables
 ENV PYTHONUNBUFFERED=1
 ENV OMP_NUM_THREADS=2
 ENV MKL_NUM_THREADS=2
 
+# Health check
 HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
     CMD curl -f http://localhost:7860/health || exit 1