nit

Author: xx789633

website/docs/quickstart/flink.md

@@ -36,9 +36,11 @@ cd fluss-quickstart-flink
 2. Create a Dockerfile named `fluss.Dockerfile` as follows. You can adjust the Flink version as needed. Please make sure to download the compatible versions of [fluss-flink connector jar](/downloads), [flink-connector-faker](https://github.com/knaufk/flink-faker/releases) in the Dockerfile. 
 
 ```Dockerfile
-FROM flink:1.20.2-scala_2.12
+ARG FLINK_VERSION="1.20"
+FROM flink:${FLINK_VERSION}
+ARG FLINK_VERSION
 RUN wget -P /opt/flink/lib https://github.com/knaufk/flink-faker/releases/download/v0.5.3/flink-faker-0.5.3.jar
-RUN wget -P /opt/flink/lib https://repo1.maven.org/maven2/org/apache/fluss/fluss-flink-1.20/0.8.0-incubating/fluss-flink-1.20-0.8.0-incubating.jar
+RUN wget -P /opt/flink/lib https://repo1.maven.org/maven2/org/apache/fluss/fluss-flink-${FLINK_VERSION}/$FLUSS_DOCKER_VERSION$/fluss-flink-${FLINK_VERSION}-$FLUSS_DOCKER_VERSION$.jar
 ```
 
 3. Create a `docker-compose.yml` file with the following content: