diff --git a/Dockerfile b/Dockerfile
index 32a3e6c7ee..4edad547e9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -81,6 +81,10 @@ COPY --from=builder /app/node_modules/better-sqlite3 ./node_modules/better-sqlit
 # migrations land at <standalone>/migrations via assembleStandalone; point the runtime at them.
 ENV OMNIROUTE_MIGRATIONS_DIR=/app/migrations
 
+# Docker healthcheck script — not traced by Next.js standalone output, so copy
+# it explicitly. The HEALTHCHECK CMD references it as `node healthcheck.mjs`.
+COPY --from=builder /app/scripts/dev/healthcheck.mjs ./healthcheck.mjs
+
 # Hand /app over to the baked-in `node` non-root user (UID/GID 1000) so the
 # runtime process never holds root privileges. The chown happens after all
 # COPYs so it covers files originally owned by root in the builder stage.