try single arch image

Signed-off-by: David Justice <david@devigned.com>

Author: devigned

base-images/build.sh

@@ -2,7 +2,7 @@
 set -e
 
 DEFAULT_PREFIX=wasm/demo-base
-DEFAULT_PLATFORM="linux/arm64,linux/amd64"
+DEFAULT_PLATFORM="linux/amd64"
 
 REPO_PREFIX=${DEFAULT_PREFIX}
 PLATFORM=${DEFAULT_PLATFORM}