hswaw/paperless: listen on 127.0.0.1 only

This prevents authentication bypass from users on pod
network/boston-packets. Unfortunate.

Change-Id: I410dabff507b2f25298db09e99b6d628d76292b9
Reviewed-on: https://gerrit.hackerspace.pl/c/hscloud/+/1816
Reviewed-by: radex <radex@hackerspace.pl>
diff --git a/hswaw/paperless/paperless.libsonnet b/hswaw/paperless/paperless.libsonnet
index 2605d37..c24f264 100644
--- a/hswaw/paperless/paperless.libsonnet
+++ b/hswaw/paperless/paperless.libsonnet
@@ -136,6 +136,7 @@
                             },
                             env_: {
                                 PAPERLESS_PORT: "8000",
+                                PAPERLESS_BIND_ADDR: "127.0.0.1",
                                 PAPERLESS_URL: "https://%s" % [cfg.domain],
 
                                 PAPERLESS_SECRET_KEY: top.secretRefs.secret_key,