shichao-timeout

[Bug] Error: Unsupported OS type: msys when i buid in windows os

4

### Search before asking - [X] I had searched in the [issues](https://github.com/apache/incubator-doris/issues?q=is%3Aissue) and found no similar issues. ### Version org.apache.doris flink-doris-connector-${flink.minor.version} 1.0.0-SNAPSHOT ### What's Wrong? i have copy custom_env.sh.tpl to...