log shell commands

Author: sakthivelmanii

.kokoro/build.sh

@@ -15,6 +15,8 @@
 
 set -eo pipefail
 
+set -x
+
 ## Get the directory of the build script
 scriptDir=$(realpath $(dirname "${BASH_SOURCE[0]}"))
 ## cd to the parent directory, i.e. the root of the git repo