diff --git a/bin/start-build-env.sh b/bin/start-build-env.sh
index 2310444..0f1aed1 100755
--- a/bin/start-build-env.sh
+++ b/bin/start-build-env.sh
@@ -1,4 +1,7 @@
-DOCKER_DIR=./build-env
+#!/usr/bin/env bash
+
+SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
+DOCKER_DIR=$(cd $SCRIPT_DIR/../build-env && pwd )
 
 docker build -t tdp-builder "$DOCKER_DIR"