From 52f96d4cffe3b7904002b2d03673f900d15c27c1 Mon Sep 17 00:00:00 2001
From: Jamie Nguyen <j@jamielinux.com>
Date: Sun, 15 Jul 2018 10:12:47 +0100
Subject: [PATCH] Improve comments

---
 stretch/Dockerfile           | 4 ----
 stretch/docker-entrypoint.sh | 2 +-
 2 files changed, 1 insertion(+), 5 deletions(-)

diff --git a/stretch/Dockerfile b/stretch/Dockerfile
index 340ba23..f2481c6 100644
--- a/stretch/Dockerfile
+++ b/stretch/Dockerfile
@@ -8,11 +8,7 @@ RUN set -ex; \
     apt-get install -y exim4-daemon-light; \
     apt-get clean
 
-# Copy the main script.
 COPY docker-entrypoint.sh /usr/local/bin/docker-entrypoint.sh
-
-# We expose exim on port 25.
 EXPOSE 25/tcp
-
 ENTRYPOINT [ "docker-entrypoint.sh" ]
 CMD [ "exim", "-bdf", "-v", "-q30m" ]
diff --git a/stretch/docker-entrypoint.sh b/stretch/docker-entrypoint.sh
index c68c550..feebf54 100755
--- a/stretch/docker-entrypoint.sh
+++ b/stretch/docker-entrypoint.sh
@@ -10,7 +10,7 @@ DC_EXIMCONFIG_CONFIGTYPE="internet"
 # in case port 25 is accidentally exposed to the public internet.
 DC_RELAY_NETS="10.0.0.0/8;172.16.0.0/12;192.168.0.0/16"
 
-# Set smarthost.
+# If RELAY_HOST has been set then switch to smart host configuration.
 if [ "x$RELAY_HOST" != "x" ]; then
     DC_EXIMCONFIG_CONFIGTYPE="satellite"
     DC_SMARTHOST="$RELAY_HOST::${RELAY_PORT:-25}"