1:9.16.50-1+ubuntu20.04.1+deb.sury.org+1

Dockerfile

@@ -3,15 +3,24 @@ MAINTAINER BIND 9 Developers <bind9-dev@isc.org>
 
 ENV DEBIAN_FRONTEND noninteractive
 ENV LC_ALL C.UTF-8
-ENV DEB_VERSION=1:9.16.6-1+ubuntu20.04.1+isc+5
 
+ARG DEB_VERSION=1:9.16.50-1+ubuntu20.04.1+deb.sury.org+1
+
+# Install add-apt-repository command
 RUN apt-get -qqqy update
-RUN apt-get -qqqy install apt-utils software-properties-common dctrl-tools
-RUN add-apt-repository -y ppa:isc/bind
 RUN apt-get -qqqy dist-upgrade
-RUN apt-get -qqqy install bind9=${DEB_VERSION} bind9-utils=${DEB_VERSION}
+RUN apt-get -qqqy install --no-install-recommends apt-utils software-properties-common dctrl-tools gpg-agent
 
-VOLUME ["/etc/bind", "/var/cache/bind", "/var/lib/bind", "/var/log"]
+# Add the BIND 9 APT Repository
+RUN add-apt-repository -y ppa:isc/bind-esv
+
+# 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 autoremove 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
@@ -19,6 +28,8 @@ RUN mkdir -p /var/lib/bind && chown bind:bind /var/lib/bind && chmod 755 /var/li
 RUN mkdir -p /var/log/bind && chown bind:bind /var/log/bind && chmod 755 /var/log/bind
 RUN mkdir -p /run/named && chown bind:bind /run/named && chmod 755 /run/named
 
+VOLUME ["/etc/bind", "/var/cache/bind", "/var/lib/bind", "/var/log"]
+
 EXPOSE 53/udp 53/tcp 953/tcp
 
-CMD ["/usr/sbin/named", "-g", "-c", "/etc/bind/named.conf", "-u", "bind"]
+CMD ["/usr/sbin/named", "-f", "-c", "/etc/bind/named.conf", "-u", "bind"]