Fix build

backend/Dockerfile

@@ -7,15 +7,25 @@ RUN apt-get update && apt-get install -y \
     libsndfile1-dev \
     gcc \
     g++ \
+    gfortran \
+    libopenblas-dev \
+    liblapack-dev \
+    pkg-config \
+    curl \
     && rm -rf /var/lib/apt/lists/*
 
 # Set working directory
 WORKDIR /app
 
+# Upgrade pip, setuptools, wheel
+RUN pip install --no-cache-dir --upgrade pip setuptools wheel
+
 # Copy requirements
 COPY requirements.txt .
 
-# Install Python dependencies
+# Install Python dependencies in stages for better caching
+RUN pip install --no-cache-dir numpy==1.24.3
+RUN pip install --no-cache-dir scipy==1.11.4
 RUN pip install --no-cache-dir -r requirements.txt
 
 # Copy application code