updates for docker environments

Dockerfile

@@ -4,6 +4,16 @@ EXPOSE 9999
 
 WORKDIR /usr/src/app
 
-COPY app/* /usr/src/app/
+# Set PYTHONPATH to include /usr/src/app
+ENV PYTHONPATH=/usr/src/app
+
+# Copy the zerto exporter into the container
+COPY app /usr/src/app/
+
+# Delete uuid.txt file if it exists
+RUN [ -f uuid.txt ] && rm uuid.txt || echo "No uuid.txt file to delete"
 
 RUN pip install --no-cache-dir -r requirements.txt
+
+# Entry point for the container
+CMD ["python", "python-node-exporter.py"]