fix docker

backend/Dockerfile

@@ -18,21 +18,21 @@ RUN apt-get update && apt-get install -y \
 # Install UV for faster Python package management
 RUN pip install uv
 
-# Create non-root user early
-RUN useradd --create-home --shell /bin/bash app && \
-    chown -R app:app /app
-
-# Switch to app user
-USER app
-
 # Copy pyproject.toml and uv.lock
-COPY --chown=app:app pyproject.toml uv.lock ./
+COPY pyproject.toml uv.lock ./
 
-# Install Python dependencies as app user
+# Install Python dependencies
 RUN uv sync --frozen --no-dev
 
 # Copy application code
-COPY --chown=app:app . .
+COPY . .
+
+# Create non-root user and fix permissions
+RUN useradd --create-home --shell /bin/bash app && \
+    chown -R app:app /app && \
+    chmod -R 755 /app
+
+USER app
 
 # Expose port
 EXPOSE 8000