diff --git a/.woodpecker/build.yaml b/.woodpecker/build.yaml
index d18fdb8..b28efc1 100644
--- a/.woodpecker/build.yaml
+++ b/.woodpecker/build.yaml
@@ -12,9 +12,13 @@ steps:
           password: {from_secret: kokuwa_io_password}
       platform: [linux/amd64, linux/arm64]
       build-args:
-        NPM_CONFIG_REGISTRY:
+        NPM_CONFIG_REGISTRY: $NPM_CONFIG_REGISTRY
         FOO: bar 
-        CCC: null 
+        CCC: null
+      build-args2:
+        - NPM_CONFIG_REGISTRY
+        - FOO=bar 
+        - CCC=null
       annotation:
         org.opencontainers.image.title: Buildctl WoodpeckerCI Plugin
         org.opencontainers.image.description: A WoodpeckerCI plugin for buildctl to build container images using a remote builtkitd instance.