diff --git a/cosmo/Dockerfile b/cosmo/Dockerfile
index ee18a2f..49c4d0c 100644
--- a/cosmo/Dockerfile
+++ b/cosmo/Dockerfile
@@ -177,3 +177,5 @@ RUN --mount=type=tmpfs,target=/tmp : \
 FROM alpine:3.16 AS runner
 COPY --from=distrib /distrib /cosmopolitan
 ENV PATH="/cosmopolitan/bin:/cosmopolitan/gcc/bin/:/cosmopolitan/gcc/x86_64-linux-musl/bin/:$PATH"
+ARG COSMO_FLAVOR
+ENV COSMO_DIST="/cosmopolitan/dist/$COSMO_FLAVOR"