Add build argument for CN (#39)

- Add BUILD_CN argument for flexibility
- Update base Python image reference

Co-authored-by: Haihui.Wang <[email protected]>

Author: HaiHui886

Dockerfile

@@ -1,6 +1,9 @@
 ARG PYTHON_IMAGE=docker.io/python:3.10.14
+ARG BUILD_CN=false
+
 FROM ${PYTHON_IMAGE}
 # FROM python:3.10.14
+
 # prepare the java env
 WORKDIR /opt
 # download jdk