diff --git a/docker/web.Dockerfile b/docker/web.Dockerfile
index 70e9cb0..d870141 100644
--- a/docker/web.Dockerfile
+++ b/docker/web.Dockerfile
@@ -42,6 +42,14 @@ ENV HOSTNAME=0.0.0.0
 COPY --from=build /app/apps/web/.next/standalone ./
 COPY --from=build /app/apps/web/.next/static ./apps/web/.next/static
 COPY --from=build /app/apps/web/public ./apps/web/public
+# Next's standalone tracer copied packages/shared/dist/*.js but
+# missed their transitive deps — packages/shared/dist/rrule.js does
+# require("rrule") and the rrule node_modules entry never landed in
+# the standalone output (pnpm's symlinked layout often confuses the
+# tracer). Copy the workspace packages' node_modules trees in
+# directly so the require chain resolves at runtime.
+COPY --from=build /app/packages/shared/node_modules ./packages/shared/node_modules
+COPY --from=build /app/packages/db/node_modules ./packages/db/node_modules
 # Reuse the `node` user (UID/GID 1000) that node:alpine ships with —
 # `addgroup -g 1000 app` collided with the pre-existing node group.
 RUN chown -R node:node /app