[update][docker] remove custom maven settings

Dockerfile

@@ -8,8 +8,6 @@ ARG type="basic"
 ENV package_type=$type
 
 RUN <<EOF
-  mkdir /root/.m2 
-  echo '<?xml version="1.0" encoding="UTF-8"?><settings xmlns="http://maven.apache.org/SETTINGS/1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd"><mirrors><mirror><id>tencent</id><mirrorOf>*</mirrorOf><name>tencent cloud</name><url>https://mirrors.cloud.tencent.com/nexus/repository/maven-public/</url></mirror></mirrors></settings>' >/root/.m2/settings.xml 
     mvn clean package -P${package_type} -DskipTests 
     mvn package assembly:single 
     ./shrink_package.sh