Try to make the Docker-based RPM building a little less noisy.

contrib/travis/docker-rpmbuild.sh

@@ -1,7 +1,5 @@
 #!/bin/bash
 
-set -x
-
 VERSION=${PACKAGE_VERSION:-1.3.6rc5}
 
 # Make sure that the necessary packages/tools are installed
@@ -15,11 +13,11 @@ yum install -y openldap-devel libmemcached-devel mysql-devel pcre-devel postgres
 
 mkdir git
 cd git
-git clone --depth 10 https://github.com/proftpd/proftpd.git proftpd-${VERSION}
+git clone -q --depth 10 https://github.com/proftpd/proftpd.git proftpd-${VERSION}
 cd proftpd-${VERSION}/
 ./configure
 rm -fr .git/
 make dist
 cd ..
-tar zcvf proftpd-${VERSION}.tar.gz proftpd-${VERSION}
+tar zcf proftpd-${VERSION}.tar.gz proftpd-${VERSION}
 rpmbuild -ta proftpd-${VERSION}.tar.gz --with everything