Trying to improve how images are built, using docker caching the best I can

Signed-off-by: Cliff Hill <xlorep@darkhelm.org>

Dockerfile.cicd

@@ -69,6 +69,11 @@ RUN echo "=== Installing Backend Dependencies (Phase 1: Optimized Caching) ==="
     # Install dependencies from extracted pyproject.toml (this layer will cache!)
     if [ -f "pyproject.toml" ]; then \
         echo "Installing project dependencies from pyproject.toml..." && \
+        # Create minimal source structure to satisfy package build requirements
+        mkdir -p src/backend && \
+        echo "# Temporary README for dependency caching phase" > ../README.md && \
+        echo "# Minimal __init__.py for build" > src/backend/__init__.py && \
+        # Install all dependencies including dev dependencies
         uv sync --dev && \
         echo "✓ Backend dependencies installed and cached"; \
     else \