From dff4a405344a9a1dd9caef8c9298b7dff9d3cc3a Mon Sep 17 00:00:00 2001
From: Antoine Amarilli <a3nm@a3nm.net>
Date: Wed, 25 Oct 2017 11:17:50 +0200
Subject: [PATCH] clean the environment but keep important variables

building the image fails otherwise (encoding issues, missing PATH,
etc.); took invocation from https://unix.stackexchange.com/a/49057
---
 README.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 364115b..1f1d275 100644
--- a/README.md
+++ b/README.md
@@ -40,7 +40,8 @@ issuing the following:
 
 ```shell
 umask 022
-sudo env -i ./vmdb2/vmdb2 --output raspi3.img raspi3.yaml --log raspi3.log
+sudo env -i HOME="$HOME" LC_CTYPE="${LC_ALL:-${LC_CTYPE:-$LANG}}" PATH="$PATH" USER="$USER" \
+    ./vmdb2/vmdb2 --output raspi3.img raspi3.yaml --log raspi3.log
 ```
 
 ## Installing the image onto the Raspberry Pi 3