Consolidate more things

bin/sign

@@ -6,10 +6,7 @@ set -e
 BUILD_ROOT=$(realpath "${BASH_SOURCE[0]%/*}/..")
 source "$BUILD_ROOT/helpers/message-helpers.sh"
 source "$BUILD_ROOT/helpers/docker-helpers.sh"
-
-ARCH=${ARCH:-x86_64}
-BUILD_OUTPUT_DIR="$BUILD_ROOT/build-output/$ARCH"
-BUILD_DIR="$BUILD_ROOT/build"
+source "$BUILD_ROOT/helpers/paths.sh"
 
 print_header "Sign Packages"
 
@@ -18,6 +15,7 @@ while [[ $# -gt 0 ]]; do
   case $1 in
   --arch)
     ARCH="$2"
+    update_arch_paths
     shift 2
     ;;
   -h | --help)