error "gpg: not a detached signature" occurred when build rocketmq 4.9.2 alpine image

1. Please describe the issue you observed:

build rocketmq docker image with version 4.9.2:

sh build-image.sh 4.9.2 alpine

error "gpg: not a detached signature" occurred

2. Please tell us about your environment:

macos big sur

3. Other information (e.g. detailed explanation, logs, related issues, suggestions how to fix, etc):

build rocketmq docker image under version 4.9.1(<=4.9.1), it works fine.