Update Dockerfile

Dockerfile

@@ -1,18 +1,33 @@
-# Install Cython and build dependencies first
-RUN pip install --no-cache-dir --user cython numpy mako cyarray
+FROM python:3.10
+
+RUN apt-get update && apt-get install -y \
+    build-essential \
+    gcc \
+    g++ \
+    gfortran \
+    libopenblas-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN useradd -m -u 1000 user
+
+USER user
+
+ENV PATH="/home/user/.local/bin:$PATH"
+
+WORKDIR /app
+
+RUN pip install --no-cache-dir --user --upgrade pip cython numpy mako cyarray
 
-# Copy and install requirements
 COPY --chown=user ./requirements.txt requirements.txt
+
 RUN pip install --no-cache-dir --user -r requirements.txt
 
-# Try to install pysph from PyPI first (pre-compiled)
-RUN pip install --no-cache-dir --user pysph || echo "PyPI installation failed, will build from source"
+RUN pip install --no-cache-dir --user pysph || echo "Will build from source"
 
-# Copy all source code
 COPY --chown=user . /app
 
-# Only build from source if PyPI installation failed
 WORKDIR /app/pysph/source
+
 RUN pip show pysph > /dev/null 2>&1 || pip install --no-cache-dir --user -e .
 
 WORKDIR /app