Simplify data ingestion service

microservices/data-ingestion-service/Dockerfile

@@ -21,13 +21,16 @@ COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 
 # Copy application code
-COPY . .
+COPY src/ ./src/
 
 # Create non-root user for security
 RUN adduser --disabled-password --gecos '' appuser
 RUN chown -R appuser:appuser /app
 USER appuser
 
+# Add src directory to PYTHONPATH
+ENV PYTHONPATH="/app/src:$PYTHONPATH"
+
 # Expose port
 EXPOSE 8008
 
@@ -35,5 +38,5 @@ EXPOSE 8008
 HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
     CMD curl -f http://localhost:8008/health || exit 1
 
-# Start the application
-CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8008", "--reload"]
+# Start the application from src directory
+CMD ["uvicorn", "src.main:app", "--host", "0.0.0.0", "--port", "8008", "--reload"]