docker: update Postgres client binaries to 14.0.

Update the Postgres client binaries (psql et al) to version 14.0. This
is so they match the server version, and so that pg_amcheck is
available, which was introduced in 14.0.

This requires updating the base image to Ubuntu 21.04 at the same time
because the Postgres repo doesn't support version 14.0 on Ubuntu 20.10.

config/docker/build-base-image.sh

@@ -7,6 +7,7 @@ VIPS_VERSION="${VIPS_VERSION:-8.11.3}"
 FFMPEG_VERSION="${FFMPEG_VERSION:-4.4}"
 EXIFTOOL_VERSION="${EXIFTOOL_VERSION:-12.30}"
 OPENRESTY_VERSION="${OPENRESTY_VERSION:-1.19.9.1}"
+POSTGRESQL_CLIENT_VERSION="${POSTGRESQL_CLIENT_VERSION:-14}"
 
 COMMON_BUILD_DEPS="
   curl ca-certificates build-essential pkg-config git
@@ -19,7 +20,7 @@ VIPS_BUILD_DEPS="
 "
 EXIFTOOL_RUNTIME_DEPS="perl perl-modules libarchive-zip-perl"
 DANBOORU_RUNTIME_DEPS="
-  ca-certificates mkvtoolnix postgresql-client-12 libpq5
+  ca-certificates mkvtoolnix libpq5
   zlib1g libfftw3-3 libwebp6 libwebpmux3 libwebpdemux2 liborc-0.4.0 liblcms2-2
   libpng16-16 libjpeg-turbo8 libexpat1 libglib2.0 libgif7 libexif12 libvpx6
 "
@@ -108,6 +109,17 @@ install_openresty() {
   make install
 }
 
+install_postgresql_client() {
+  apt_install gnupg
+
+  . /etc/lsb-release
+  curl https://www.postgresql.org/media/keys/ACCC4CF8.asc | gpg --dearmor > /usr/share/keyrings/postgresql.gpg
+  echo "deb [signed-by=/usr/share/keyrings/postgresql.gpg] http://apt.postgresql.org/pub/repos/apt $DISTRIB_CODENAME-pgdg main" > /etc/apt/sources.list.d/pgdg.list
+
+  apt-get update
+  apt_install postgresql-client-${POSTGRESQL_CLIENT_VERSION}
+}
+
 install_busybox() {
   busybox --install -s
 }
@@ -116,7 +128,7 @@ cleanup() {
   apt-get purge -y $RUBY_BUILD_DEPS $VIPS_BUILD_DEPS $FFMPEG_BUILD_DEPS
   apt-get purge -y --allow-remove-essential \
     build-essential pkg-config e2fsprogs git libglib2.0-bin libglib2.0-doc \
-    mount procps python3 readline-common shared-mime-info tzdata
+    mount procps python3 shared-mime-info tzdata
   apt-get autoremove -y
 
   rm -rf \
@@ -139,5 +151,6 @@ install_ffmpeg
 install_vips
 install_ruby
 install_openresty
+install_postgresql_client
 cleanup
 install_busybox # after cleanup so we can install some utils removed by cleanup