diff --git a/.github/actions/build-rwasm/Dockerfile b/.github/actions/build-rwasm/Dockerfile
index eb7d39d..d25e80c 100644
--- a/.github/actions/build-rwasm/Dockerfile
+++ b/.github/actions/build-rwasm/Dockerfile
@@ -1,6 +1,10 @@
 # Container image that runs your code
 FROM ghcr.io/r-wasm/webr:main
 
+# Needed to be able to adjust files after running Dockerfile
+# Related: https://github.com/actions/runner/issues/434
+USER root
+
 # Copies your code file from your action repository to the filesystem path `/` of the container
 COPY code.R /code.R