Thanks, Athos.

The image built fine, but I'm seeing permission problems with this one as well:

Starting named...
exec /usr/sbin/named -u "bind" "-g" ""
24-Oct-2023 18:17:06.481 starting BIND 9.18.18-0ubuntu2-Ubuntu (Extended Support Version) <id:>
24-Oct-2023 18:17:06.481 running on Linux x86_64 5.15.0-78-generic #85-Ubuntu SMP Fri Jul 7 15:25:09 UTC 2023
24-Oct-2023 18:17:06.481 built with  '--build=x86_64-linux-gnu' '--prefix=/usr' '--includedir=${prefix}/include' '--mandir=${prefix}/share/man' '--infodir=${prefix}/share/info' '--sysconfdir=/etc' '--localstatedir=/var' '--disable-option-checking' '--disable-silent-rules' '--libdir=${prefix}/lib/x86_64-linux-gnu' '--runstatedir=/run' '--disable-maintainer-mode' '--disable-dependency-tracking' '--libdir=/usr/lib/x86_64-linux-gnu' '--sysconfdir=/etc/bind' '--with-python=python3' '--localstatedir=/' '--enable-threads' '--enable-largefile' '--with-libtool' '--enable-shared' '--disable-static' '--with-gost=no' '--with-openssl=/usr' '--with-gssapi=yes' '--with-libidn2' '--with-json-c' '--with-lmdb=/usr' '--with-gnu-ld' '--with-maxminddb' '--with-atf=no' '--enable-ipv6' '--enable-rrl' '--enable-filter-aaaa' '--disable-native-pkcs11' 'build_alias=x86_64-linux-gnu' 'CFLAGS=-g -O2 -ffile-prefix-map=/build/bind9-UHPUkp/bind9-9.18.18=. -flto=auto -ffat-lto-objects -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -fdebug-prefix-map=/build/bind9-UHPUkp/bind9-9.18.18=/usr/src/bind9-1:9.18.18-0ubuntu2 -fno-strict-aliasing -fno-delete-null-pointer-checks -DNO_VERSION_DATE -DDIG_SIGCHASE' 'LDFLAGS=-Wl,-Bsymbolic-functions -flto=auto -ffat-lto-objects -Wl,-z,relro -Wl,-z,now' 'CPPFLAGS=-Wdate-time -D_FORTIFY_SOURCE=2'
24-Oct-2023 18:17:06.481 running as: named -u bind -g
24-Oct-2023 18:17:06.481 compiled by GCC 13.2.0
24-Oct-2023 18:17:06.481 compiled with OpenSSL version: OpenSSL 3.0.10 1 Aug 2023
24-Oct-2023 18:17:06.481 linked to OpenSSL version: OpenSSL 3.0.10 1 Aug 2023
24-Oct-2023 18:17:06.481 compiled with libuv version: 1.44.2
24-Oct-2023 18:17:06.481 linked to libuv version: 1.44.2
24-Oct-2023 18:17:06.481 compiled with libxml2 version: 2.9.14
24-Oct-2023 18:17:06.481 linked to libxml2 version: 20914
24-Oct-2023 18:17:06.481 compiled with json-c version: 0.17
24-Oct-2023 18:17:06.481 linked to json-c version: 0.17
24-Oct-2023 18:17:06.481 compiled with zlib version: 1.2.13
24-Oct-2023 18:17:06.481 linked to zlib version: 1.2.13
24-Oct-2023 18:17:06.481 ----------------------------------------------------
24-Oct-2023 18:17:06.481 BIND 9 is maintained by Internet Systems Consortium,
24-Oct-2023 18:17:06.481 Inc. (ISC), a non-profit 501(c)(3) public-benefit
24-Oct-2023 18:17:06.481 corporation.  Support and training for BIND 9 are
24-Oct-2023 18:17:06.481 available at https://www.isc.org/support
24-Oct-2023 18:17:06.481 ----------------------------------------------------
24-Oct-2023 18:17:06.481 found 16 CPUs, using 16 worker threads
24-Oct-2023 18:17:06.481 using 16 UDP listeners per interface
24-Oct-2023 18:17:06.485 DNSSEC algorithms: RSASHA1 NSEC3RSASHA1 RSASHA256 RSASHA512 ECDSAP256SHA256 ECDSAP384SHA384 ED25519 ED448
24-Oct-2023 18:17:06.485 DS algorithms: SHA-1 SHA-256 SHA-384
24-Oct-2023 18:17:06.485 HMAC algorithms: HMAC-MD5 HMAC-SHA1 HMAC-SHA224 HMAC-SHA256 HMAC-SHA384 HMAC-SHA512
24-Oct-2023 18:17:06.485 TKEY mode 2 support (Diffie-Hellman): yes
24-Oct-2023 18:17:06.485 TKEY mode 3 support (GSS-API): yes
24-Oct-2023 18:17:06.485 config.c: option 'trust-anchor-telemetry' is experimental and subject to change in the future
24-Oct-2023 18:17:06.485 loading configuration from '/etc/bind/named.conf'
24-Oct-2023 18:17:06.485 directory '/var/cache/bind' is not writable
24-Oct-2023 18:17:06.485 /etc/bind/named.conf.options:2: parsing failed: permission denied
24-Oct-2023 18:17:06.485 loading configuration: permission denied
24-Oct-2023 18:17:06.485 exiting (due to fatal error)

This is strange and, again, feels like something misconfigured
locally, but I'm not sure.  I'd like your opinion here.  Thanks.