Move migrations to runtime via entrypoint script

Dockerfile

@@ -9,6 +9,7 @@ WORKDIR /app
 # Install system dependencies
 RUN apt-get update && apt-get install -y --no-install-recommends \
     wget \
+    bash \
     && rm -rf /var/lib/apt/lists/*
 
 # Install Miniconda for FEniCS
@@ -26,9 +27,9 @@ RUN conda config --remove channels defaults || true && \
 # Install FEniCS via conda-forge only
 RUN conda install fenics-dolfinx mpich petsc4py -y && conda clean -afy
 
-# Install Python dependencies
+# Install Python dependencies (use conda's pip)
 COPY requirements.txt .
-RUN pip install --no-cache-dir -r requirements.txt
+RUN /opt/conda/bin/pip install --no-cache-dir -r requirements.txt
 
 # Copy application files
 COPY backend/ ./backend/
@@ -38,13 +39,12 @@ COPY DangVan/ ./DangVan/
 # Create directories for results and database
 RUN mkdir -p /app/backend/simulation_results && chmod 777 /app/backend/simulation_results
 
-# Initialize database and collect static files
-WORKDIR /app/backend
-RUN python manage.py migrate --noinput
-RUN python manage.py collectstatic --noinput
+# Copy entrypoint script
+COPY entrypoint.sh /app/entrypoint.sh
+RUN chmod +x /app/entrypoint.sh
 
 # HF Spaces uses port 7860
 EXPOSE 7860
 
-# Run with gunicorn
-CMD ["gunicorn", "--bind", "0.0.0.0:7860", "--workers", "2", "--timeout", "120", "backend.wsgi:application"]
+# Run entrypoint (handles migrations and starts server)
+CMD ["/app/entrypoint.sh"]

entrypoint.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+set -e
+
+# Activate conda environment
+source /opt/conda/etc/profile.d/conda.sh
+conda activate base
+
+# Run migrations
+cd /app/backend
+python manage.py migrate --noinput
+
+# Collect static files (if not already done)
+python manage.py collectstatic --noinput --clear
+
+# Start gunicorn
+exec gunicorn --bind 0.0.0.0:7860 --workers 2 --timeout 120 backend.wsgi:application