Set Up with Kubernetes, dockerfile document error in constructing docker image (apache#5022)

Co-authored-by: yctan <[email protected]>

Author: yctanGmail

docs/en/start-v2/kubernetes/kubernetes.mdx

@@ -42,16 +42,14 @@ To run the image with SeaTunnel, first create a `Dockerfile`:
 ```Dockerfile
 FROM flink:1.13
 
-ENV SEATUNNEL_VERSION="2.3.0"
-ENV SEATUNNEL_HOME = "/opt/seatunnel"
+ENV SEATUNNEL_VERSION="2.3.2"
+ENV SEATUNNEL_HOME="/opt/seatunnel"
 
-RUN mkdir -p $SEATUNNEL_HOME
+RUN wget https://dlcdn.apache.org/seatunnel/${SEATUNNEL_VERSION}/apache-seatunnel-${SEATUNNEL_VERSION}-bin.tar.gz
+RUN tar -xzvf apache-seatunnel-${SEATUNNEL_VERSION}-bin.tar.gz
+RUN mv apache-seatunnel-${SEATUNNEL_VERSION} ${SEATUNNEL_HOME}
 
-RUN wget https://archive.apache.org/dist/seatunnel/${SEATUNNEL_VERSION}/apache-seatunnel-incubating-${SEATUNNEL_VERSION}-bin.tar.gz
-RUN tar -xzvf apache-seatunnel-incubating-${SEATUNNEL_VERSION}-bin.tar.gz
-
-RUN cp -r apache-seatunnel-incubating-${SEATUNNEL_VERSION}/* $SEATUNNEL_HOME/
-RUN rm -rf apache-seatunnel-incubating-${SEATUNNEL_VERSION}*
+RUN cd ${SEATUNNEL_HOME}||sh bin/install-plugin.sh ${SEATUNNEL_VERSION}
 ```
 
 Then run the following commands to build the image: