diff --git a/Dockerfile b/Dockerfile
index 0687ca4..8da52f7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -23,6 +23,7 @@ RUN tar -Jxpf s6-overlay-x86_64-$S6_OVERLAY_VERSION.tar.xz -C /overlay
 FROM alpine:3.15
 
 ENV LANG=en_US.UTF-8
+ENV S6_KEEP_ENV=1
 
 COPY --from=builder /overlay /