cleanup scripts

use git command instead of some random realpath that is not installed everywhere

scripts/test.sh

@@ -1,8 +1,7 @@
 #!/bin/bash
 set -e
 
-SCRIPTS_DIR="$(dirname "${BASH_SOURCE[0]}")"
-ROOT_DIR="$(realpath $SCRIPTS_DIR/..)/"
+ROOT_DIR="$(git rev-parse --show-toplevel)/"
 TARGET_DIR="$(pwd)"
 RELATIVE_TARGET_DIR="${TARGET_DIR/$ROOT_DIR/}"
 
@@ -32,4 +31,4 @@ tsdxArgs+=($@)
 # Execute
 $node "$(yarn bin tsdx)" "${tsdxArgs[@]}"
 
-popd > /dev/null
+popd > /dev/null