Fix shell script installer, since Composer 2.2 proxies scripts in the…

… vendor/bin/ directory differently.

bin/the-build-installer

@@ -1,20 +1,10 @@
 #!/bin/sh
 #
 # Wrapper for our install command; at least this way it's somewhat discoverable.
-# Previously:
+#
+# Essentially, this runs:
 #   vendor/bin/phing -f vendor/palantirnet/the-build/targets/install.xml
+#
+# This script assumes that the composer bin dir is at vendor/bin/.
 
-# Relative path to this script.
-SCRIPT=$(readlink "$0")
-
-# Absolute path to this script's parent directory.
-SCRIPTPATH=$(cd `dirname $0` && cd `dirname $SCRIPT` && pwd)
-
-REPOPATH=$(cd `dirname $SCRIPTPATH` && cd ../../../ && pwd)
-
-if [ "$REPOPATH" = `pwd` ]; then
-  # Run our install task.
-  $SCRIPTPATH/../../../bin/phing -f $SCRIPTPATH/../targets/install.xml
-else
-  echo "Please run this command from your project root."
-fi
+(cd $COMPOSER_BIN_DIR/../../ && $COMPOSER_BIN_DIR/phing -f $COMPOSER_BIN_DIR/../palantirnet/the-build/targets/install.xml)