From f14945c52d760ce472073c8df3b3451863416c00 Mon Sep 17 00:00:00 2001
From: NorseGaud <connarpierce@gmail.com>
Date: Sun, 6 Mar 2022 14:52:38 -0500
Subject: [PATCH] issues/2023: postfix is not able to install due to incorrect
 hostname in container

---
 Dockerfile | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Dockerfile b/Dockerfile
index 60a7acfc..23e5a000 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -41,7 +41,12 @@ RUN \
   apt-get -qq update && \
   apt-get -qq install apt-utils 2>/dev/null && \
   apt-get -qq dist-upgrade && \
+  echo "applying workaround for ubuntu/postfix bug described in https://github.com/docker-mailserver/docker-mailserver/issues/2023#issuecomment-855326403" && \
+  mv /bin/hostname{,.bak} && \
+  echo "echo docker-mailserver.invalid" > /bin/hostname && \
+  chmod +x /bin/hostname && \
   apt-get -qq install postfix && \
+  mv /bin/hostname{.bak,} && \
   apt-get -qq --no-install-recommends install \
   # A - D
   altermime amavisd-new apt-transport-https arj binutils bzip2 bsd-mailx \