entrypoint.sh sets environment variables correctly. Dockerfile has all necessary steps, still needs to be cleaned up

scripts/entrypoint.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+# adapted from https://stackoverflow.com/questions/55921914/how-to-source-a-script-with-environment-variables-in-a-docker-build-process
+
+. /home/riscvuser/chipyard/env.sh
+
+exec "$@"