From 5a9ef0e48db5c792e09b307db7942d038a7f4e6f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ond=C5=99ej=20Sur=C3=BD?= <ondrej@sury.org>
Date: Fri, 28 Jan 2022 09:14:23 +0100
Subject: [PATCH] Remove policykit-1 package after installing BIND 9

---
 Dockerfile | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index dacf6fb..494a456 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,12 +4,23 @@ MAINTAINER BIND 9 Developers <bind9-dev@isc.org>
 ENV DEBIAN_FRONTEND noninteractive
 ENV LC_ALL C.UTF-8
 
-RUN apt-get -qqqy update
-RUN apt-get -qqqy install apt-utils software-properties-common dctrl-tools
-
 ARG DEB_VERSION=1:9.18.0-2+ubuntu20.04.1+isc+1
+
+# Install add-apt-repository command
+RUN apt-get -qqqy update
+RUN apt-get -qqqy dist-upgrade
+RUN apt-get -qqqy install --no-install-recommends apt-utils software-properties-common dctrl-tools
+
+# Add the BIND 9 APT Repository
 RUN add-apt-repository -y ppa:isc/bind-dev
-RUN apt-get -qqqy update && apt-get -qqqy dist-upgrade && apt-get -qqqy install bind9=$DEB_VERSION bind9-utils=$DEB_VERSION
+
+# Install BIND 9
+RUN apt-get -qqqy update
+RUN apt-get -qqqy dist-upgrade
+RUN apt-get -qqqy install bind9=$DEB_VERSION bind9utils=$DEB_VERSION
+
+# Now remove the pkexec that got pulled as dependency to software-properties-common
+RUN apt-get --purge -y remove policykit-1
 
 RUN mkdir -p /etc/bind && chown root:bind /etc/bind/ && chmod 755 /etc/bind
 RUN mkdir -p /var/cache/bind && chown bind:bind /var/cache/bind && chmod 755 /var/cache/bind