use env?

.woodpecker/.base-os.yml

@@ -6,15 +6,16 @@ matrix:
 steps:
   build-os:
     image: woodpeckerci/plugin-docker-buildx:2
+    environment:
+      IMAGE_VERSION: "${DEBIAN_VERSION}"
     settings:
       debug: true
       repo: gitea.simcop2387.info/simcop2387/perl-os-base
       dockerfile: os-base/Dockerfile 
       context: os-base/
       auto_tag: false
+      build_args_from_env: true
       default_tag: debian-${DEBIAN_VERSION}
-      build_args:
-        - IMAGE_VERSION: ${DEBIAN_VERSION}
       tags:
         - "debian-${DEBIAN_VERSION}-${CI_PIPELINE_CREATED}"
       logins: