diff --git a/.dockerignore b/.dockerignore
index f2e04e8d31f..fe604161d2b 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -13,4 +13,5 @@
 !plugins
 !test
 !ext
+!docker-runner.mjs
 **/_build
diff --git a/Dockerfile b/Dockerfile
index f6cafa437be..f000485ab21 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", "./docker-runner.mjs"]