+IGNORE_ROOT_ARG="--ignore-root-warning"
+IGNORE_ROOT=0
+
+if [ "$1" == "$IGNORE_ROOT_ARG" ]; then
+ IGNORE_ROOT=1
+fi
+
+# Abort running this script if root
+if [ "$IGNORE_ROOT" -eq 0 ] && [ "$EUID" == "0" ]; then
+ echo "Do not run this script as root!" >&2
+ echo "Use $IGNORE_ROOT_ARG to ignore this error." >&2
+ exit 1
+fi
+
+set -e
+set -u
+
+COMPOSER_COMMAND='composer'
+
+DIR="${BASH_SOURCE}"
+if [ ! -d "$DIR" ]; then DIR="$PWD/scripts"; fi