Fixed build dir

Author: michallorens

run_docker.sh

@@ -1,5 +1,6 @@
 #!/bin/bash
-rm -rf build/pip
+rm -rf build
+mkdir build
 docker run --name build-lambda-layer "$@" > /dev/null 2>&1
 docker cp build-lambda-layer:/libraries.zip build/libraries.zip > /dev/null 2>&1
 docker rm build-lambda-layer > /dev/null 2>&1