diff --git a/Dockerfile b/Dockerfile
index ab6edba..79b62a8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,16 +1,9 @@
 FROM postgres:15
 
-
-RUN mkdir -p "$PGDATA" && \
-    chmod 00700 "$PGDATA" && \
-    mkdir -p /var/run/postgresql && \
-    chmod 03755 /var/run/postgresql
-
-RUN apt-get update && \
-    apt-get install -y --no-install-recommends \
-            postgresql-15-pgpool2 \
-            && \
-    rm -rf /var/lib/apt/lists/*
+RUN set -eux && \
+	groupadd -r postgres --gid=5432 && \
+	useradd -r -g postgres --uid=5432 --home-dir=/var/lib/postgresql --shell=/bin/bash postgres && \
+	install --verbose --directory --owner postgres --group postgres --mode 1755 /var/lib/postgresql
 
 RUN apt-get update && \
     apt-get install -y --no-install-recommends \
@@ -18,13 +11,109 @@ RUN apt-get update && \
             sudo \
             && \
     rm -rf /var/lib/apt/lists/* && \
-    echo "postgres  ALL = (ALL) NOPASSWD:ALL" >> /etc/sudoers && \
+    echo "postgres   ALL = (ALL) NOPASSWD:ALL" >> /etc/sudoers && \
     echo "X11Forwarding no" >> /etc/ssh/sshd_config && \
     echo "PasswordAuthentication no" >> /etc/ssh/sshd_config && \
     echo "StrictHostKeyChecking no" >> /etc/ssh/ssh_config
 
-COPY --chown=postgres:postgres postgres /var/lib/postgresql/
 
+RUN set -ex && \
+	apt-get update && \
+	apt-get install -y --no-install-recommends \
+		gnupg \
+		less \
+	    && \
+	rm -rf /var/lib/apt/lists/*
+
+ENV GOSU_VERSION=1.19
+RUN set -eux && \
+	savedAptMark="$(apt-mark showmanual)" && \
+	apt-get update && \
+	apt-get install -y --no-install-recommends \
+            ca-certificates \
+            wget \
+            && \
+	rm -rf /var/lib/apt/lists/* && \
+	dpkgArch="$(dpkg --print-architecture | awk -F- '{ print $NF }')" && \
+	wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/${GOSU_VERSION}/gosu-${dpkgArch}" && \
+	wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/${GOSU_VERSION}/gosu-${dpkgArch}.asc" &6 \
+	export GNUPGHOME="$(mktemp -d)" && \
+	gpg --batch --keyserver hkps://keys.openpgp.org --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 && \
+	gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu && \
+	gpgconf --kill all && \
+	rm -rf "${GNUPGHOME}" /usr/local/bin/gosu.asc && \
+	apt-mark auto '.*' > /dev/null && \
+	[ -z "${savedAptMark}" ] || apt-mark manual "${savedAptMark}" > /dev/null && \
+	apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false && \
+	chmod +x /usr/local/bin/gosu && \
+	gosu --version && \
+	gosu nobody true
+
+RUN set -eux; \
+	grep -q '/usr/share/locale' /etc/dpkg/dpkg.cfg.d/docker && \
+	sed -ri '/\/usr\/share\/locale/d' /etc/dpkg/dpkg.cfg.d/docker && \
+	! grep -q '/usr/share/locale' /etc/dpkg/dpkg.cfg.d/docker && \
+	apt-get update && \
+    apt-get install -y --no-install-recommends \
+            locales && \
+    rm -rf /var/lib/apt/lists/* && \
+	echo 'en_US.UTF-8 UTF-8' >> /etc/locale.gen && \
+	locale-gen && \
+	locale -a | grep 'en_US.utf8'
+ENV LANG=en_US.utf8
+
+RUN set -eux && \
+	apt-get update && \
+	apt-get install -y --no-install-recommends \
+		xz-utils \
+		zstd \
+        && \
+	rm -rf /var/lib/apt/lists/*
+
+RUN set -ex && \
+	key='B97B0AFCAA1A47F044F244A07FCC7D46ACCC4CF8' && \
+	export GNUPGHOME="$(mktemp -d)" && \
+	mkdir -p /usr/local/share/keyrings/ && \
+	gpg --batch --keyserver keyserver.ubuntu.com --recv-keys "${key}" && \
+	gpg --batch --export --armor "${key}" > /usr/local/share/keyrings/postgres.gpg.asc && \
+	gpgconf --kill all && \
+	rm -rf "${GNUPGHOME}"
+
+ENV PG_MAJOR=15
+ENV PATH=$PATH:/usr/lib/postgresql/$PG_MAJOR/bin
+ENV PG_VERSION=15.16-1.pgdg13+1
+ENV PGDATA=/var/lib/postgresql/data
+
+RUN install --verbose --directory --owner postgres --group postgres --mode 3777 /var/run/postgresql && \
+    install --verbose --directory --owner postgres --group postgres --mode 3755 /var/lib/postgresql && \
+    install --verbose --directory --owner postgres --group postgres --mode 1777 "${PGDATA}"
+
+RUN set -ex && \
+	dpkgArch="$(dpkg --print-architecture)" && \
+	aptRepo="[ signed-by=/usr/local/share/keyrings/postgres.gpg.asc ] http://apt.postgresql.org/pub/repos/apt trixie-pgdg main ${PG_MAJOR}" && \
+	echo "deb ${aptRepo}" > /etc/apt/sources.list.d/pgdg.list && \
+	apt-get update && \
+	apt-get install -y --no-install-recommends \
+            postgresql-common \
+            && \
+	sed -ri 's/#(create_main_cluster) .*$/\1 = false/' /etc/postgresql-common/createcluster.conf && \
+	apt-get install -y --no-install-recommends \
+		"postgresql-${PG_MAJOR}=${PG_VERSION}" \
+        "postgresql-${PG_MAJOR}-pgpool2" \
+            && \
+	rm -rf /var/lib/apt/lists/* && \
+	postgres --version
+
+RUN set -eux && \
+	dpkg-divert --add --rename --divert "/usr/share/postgresql/postgresql.conf.sample.dpkg" "/usr/share/postgresql/${PG_MAJOR}/postgresql.conf.sample" && \
+	cp -v /usr/share/postgresql/postgresql.conf.sample.dpkg /usr/share/postgresql/postgresql.conf.sample && \
+	ln -sv ../postgresql.conf.sample "/usr/share/postgresql/${PG_MAJOR}/" && \
+	sed -ri "s!^#?(listen_addresses)\s*=\s*\S+.*!\1 = '*'!" /usr/share/postgresql/postgresql.conf.sample && \
+	grep -F "listen_addresses = '*'" /usr/share/postgresql/postgresql.conf.sample
+
+VOLUME /var/lib/postgresql/data
+
+COPY --chown=postgres:postgres postgres /var/lib/postgresql/
 COPY --chmod=755 entrypoint.sh /usr/local/bin/
 
 ENTRYPOINT ["entrypoint.sh"]
diff --git a/entrypoint.sh b/entrypoint.sh
index 0196ac0..4b2877f 100644
--- a/entrypoint.sh
+++ b/entrypoint.sh
@@ -28,41 +28,17 @@ docker_setup_env() {
 	file_env 'POSTGRES_PGPOOL_PASSWORD'
 }
 
-docker_init_database() {
-	local uid; uid="$(id -u)"
-	if ! getent passwd "$uid" &> /dev/null; then
-		local wrapper
-		for wrapper in {/usr,}/lib{/*,}/libnss_wrapper.so; do
-			if [ -s "$wrapper" ]; then
-				NSS_WRAPPER_PASSWD="$(mktemp)"
-				NSS_WRAPPER_GROUP="$(mktemp)"
-				export LD_PRELOAD="$wrapper" NSS_WRAPPER_PASSWD NSS_WRAPPER_GROUP
-				local gid; gid="$(id -g)"
-				printf 'postgres:x:%s:%s:PostgreSQL:%s:/bin/false\n' "$uid" "$gid" "$PGDATA" > "$NSS_WRAPPER_PASSWD"
-				printf 'postgres:x:%s:\n' "$gid" > "$NSS_WRAPPER_GROUP"
-				break
-			fi
-		done
-	fi
-	eval 'initdb --username=postgres --pwfile=<(printf "%s\n" "$POSTGRES_PASSWORD") '"$POSTGRES_INITDB_ARGS"' "$@"'
-
-	if [[ "${LD_PRELOAD:-}" == */libnss_wrapper.so ]]; then
-		rm -f "$NSS_WRAPPER_PASSWD" "$NSS_WRAPPER_GROUP"
-		unset LD_PRELOAD NSS_WRAPPER_PASSWD NSS_WRAPPER_GROUP
-	fi
-}
-
 docker_temp_server_start() {
   NOTIFY_SOCKET= \
-  PGUSER="${PGUSER:-postgres}" \
-  pg_ctl -D "$PGDATA" \
+  PGUSER="postgres" \
+  pg_ctl -D "${PGDATA}" \
   	-o "-c listen_addresses='' -p 5432" \
    	-w start
 }
 
 docker_temp_server_stop() {
-	PGUSER="${PGUSER:-postgres}" \
-	pg_ctl -D "$PGDATA" -m fast -w stop
+	PGUSER="postgres" \
+	pg_ctl -D "${PGDATA}" -m fast -w stop
 }
 
 pg_setup_conf() {
@@ -100,7 +76,6 @@ pg_setup_hba_conf() {
 	} >> "$PGDATA/pg_hba.conf"
 }
 
-
 if [ "$(id -u)" = '0' ]; then
 	exec gosu postgres "$BASH_SOURCE"
 fi
@@ -109,10 +84,9 @@ docker_setup_env
 
 if [[ ! -s "$PGDATA/PG_VERSION" ]]; then
   if [[ -z $POSTGRES_UPSTREAM ]] || [[ -z $POSTGRES_REPLICATOR_USERNAME ]]; then
-    docker_init_database
+    initdb --username=postgres --pwfile=<(printf "%s\n" "${POSTGRES_PASSWORD}")
     pg_setup_conf
     pg_setup_hba_conf
-
     if [[ -n $POSTGRES_REPLICATOR_USERNAME ]] || [[ -n $POSTGRES_PGPOOL_USERNAME ]]; then
       export PGPASSWORD="$POSTGRES_PASSWORD"
       docker_temp_server_start
@@ -126,7 +100,6 @@ if [[ ! -s "$PGDATA/PG_VERSION" ]]; then
       docker_temp_server_stop
   		unset PGPASSWORD
     fi
-
   else
     until pg_basebackup -h "${POSTGRES_UPSTREAM}" -U "${POSTGRES_REPLICATOR_USERNAME}" -D "${PGDATA}" -Fp -Xs -R &> /dev/null
     do
@@ -134,9 +107,7 @@ if [[ ! -s "$PGDATA/PG_VERSION" ]]; then
       sleep 300
     done
   fi
-
 fi
 
 sudo service ssh start
-
 postgres