dockerimg: improve docs on how to publish a new image
diff --git a/dockerimg/pushdockerimg.go b/dockerimg/pushdockerimg.go
index 3b3b710..d1eb9af 100644
--- a/dockerimg/pushdockerimg.go
+++ b/dockerimg/pushdockerimg.go
@@ -27,6 +27,7 @@
 	# Login to Docker with GitHub credentials
 	# You can get $GH_ACCESS_TOK from github.com or from 'gh auth token'.
 	# On github.com, User icon in top right...Settings...Developer Settings.
+	# Choose classic personal access token, add scopes write:packages.
 	# Make sure the token is configured to write containers for the boldsoftware org.
 	echo $GH_ACCESS_TOK | docker login ghcr.io -u $GH_USER --password-stdin