diff --git a/Dockerfile b/Dockerfile
index f6cafa43..4af861cc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -113,6 +113,7 @@ ADD bower_components /grist/bower_components
 ADD sandbox /grist/sandbox
 ADD plugins /grist/plugins
 ADD static /grist/static
+ADD docker-runner.mjs /grist/docker-runner.mjs
 
 # Make optional pyodide sandbox available
 COPY --from=builder /grist/sandbox/pyodide /grist/sandbox/pyodide
@@ -152,4 +153,4 @@ ENV \
 EXPOSE 8484
 
 ENTRYPOINT ["/usr/bin/tini", "-s", "--"]
-CMD ["./sandbox/run.sh"]
+CMD ["node", "./sandbox/supervisor.mjs"]