with centos-7 fixes

Author: craigcomstock

ci/centos-7-setup-devtoolset-11.sh

@@ -7,6 +7,6 @@ sudo sed -i '/mirrorlist/d' /etc/yum.repos.d/CentOS-SCLo-scl-rh.repo
 sudo yum update -y
 sudo yum install -y devtoolset-11
 if ! grep "source /opt/rh/devtoolset-11/enable" /usr/lib/rpm/find-debuginfo.sh; then
-  sed -i '1a\source /opt/rh/devtoolset-11/enable' /usr/lib/rpm/find-debuginfo.sh
+  sudo sed -i '1a\source /opt/rh/devtoolset-11/enable' /usr/lib/rpm/find-debuginfo.sh
 fi
 source /opt/rh/devtoolset-11/enable

ci/fix-buildhost.sh

@@ -1,11 +1,13 @@
 #!/usr/bin/env bash
+# it is expected that this file is sourced, not executed directly
 set -ex
-thisdir="$(dirname "$0")"
+my_path="$(realpath "${BASH_SOURCE[0]}")"
+my_dir="$(dirname "$my_path")"
 
 if [ -f /etc/os-release ]; then
   source /etc/os-release
   if [ "$ID" = "centos" ] && [ "$VERSION_ID" = "7" ]; then
-    source ./centos-7-setup-devtoolset-11.sh
+    source "$my_dir"/centos-7-setup-devtoolset-11.sh
   fi
 fi