diff --git a/12/Dockerfile.rhel8 b/12/Dockerfile.rhel8
index c37c48e5..8942022f 100644
--- a/12/Dockerfile.rhel8
+++ b/12/Dockerfile.rhel8
@@ -43,7 +43,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 # safe in the future. This should *never* change, the last test is there
 # to make sure of that.
 RUN yum -y module enable postgresql:12 && \
-    INSTALL_PKGS="rsync tar gettext bind-utils nss_wrapper-libs postgresql-server postgresql-contrib" && \
+    INSTALL_PKGS="rsync tar gettext nss_wrapper-libs postgresql-server postgresql-contrib" && \
     INSTALL_PKGS="$INSTALL_PKGS pgaudit" && \
     INSTALL_PKGS="$INSTALL_PKGS procps-ng util-linux postgresql-upgrade" && \
     yum -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
diff --git a/12/root/usr/bin/run-postgresql-slave b/12/root/usr/bin/run-postgresql-slave
index 586bf5d7..99e0b074 100755
--- a/12/root/usr/bin/run-postgresql-slave
+++ b/12/root/usr/bin/run-postgresql-slave
@@ -31,7 +31,7 @@ generate_passwd_file
 generate_postgresql_config
 
 wait_for_postgresql_master
-export MASTER_FQDN=$(postgresql_master_addr)
+export MASTER_FQDN=${POSTGRESQL_MASTER_IP}
 initialize_replica
 
 unset_env_vars
diff --git a/12/root/usr/share/container-scripts/postgresql/common.sh b/12/root/usr/share/container-scripts/postgresql/common.sh
index 0486c735..88eb838d 100644
--- a/12/root/usr/share/container-scripts/postgresql/common.sh
+++ b/12/root/usr/share/container-scripts/postgresql/common.sh
@@ -91,22 +91,6 @@ function unset_env_vars() {
   unset POSTGRESQL_{DATABASE,USER,PASSWORD,ADMIN_PASSWORD}
 }
 
-# postgresql_master_addr lookups the 'postgresql-master' DNS and get list of the available
-# endpoints. Each endpoint is a PostgreSQL container with the 'master' PostgreSQL running.
-function postgresql_master_addr() {
-  local service_name=${POSTGRESQL_MASTER_SERVICE_NAME:-postgresql-master}
-  local endpoints=$(dig ${service_name} A +search | grep ";${service_name}" | cut -d ';' -f 2 2>/dev/null)
-  # FIXME: This is for debugging (docker run)
-  if [ -v POSTGRESQL_MASTER_IP ]; then
-    endpoints=${POSTGRESQL_MASTER_IP:-}
-  fi
-  if [ -z "$endpoints" ]; then
-    >&2 echo "Failed to resolve PostgreSQL master IP address"
-    exit 3
-  fi
-  echo -n "$(echo $endpoints | cut -d ' ' -f 1)"
-}
-
 # Converts the version in format x.y or x.y.z to a number.
 version2number ()
 {
@@ -290,12 +274,11 @@ function set_pgdata ()
 
 function wait_for_postgresql_master() {
   while true; do
-    master_fqdn=$(postgresql_master_addr)
-    echo "Waiting for PostgreSQL master (${master_fqdn}) to accept connections ..."
+    echo "Waiting for PostgreSQL master (${POSTGRESQL_MASTER_IP}) to accept connections ..."
     if [ -v POSTGRESQL_ADMIN_PASSWORD ]; then
-      PGPASSWORD=${POSTGRESQL_ADMIN_PASSWORD} psql "postgresql://postgres@${master_fqdn}" -c "SELECT 1;" && return 0
+      PGPASSWORD=${POSTGRESQL_ADMIN_PASSWORD} psql "postgresql://postgres@${POSTGRESQL_MASTER_IP}" -c "SELECT 1;" && return 0
     else
-      PGPASSWORD=${POSTGRESQL_PASSWORD} psql "postgresql://${POSTGRESQL_USER}@${master_fqdn}/${POSTGRESQL_DATABASE}" -c "SELECT 1;" && return 0
+      PGPASSWORD=${POSTGRESQL_PASSWORD} psql "postgresql://${POSTGRESQL_USER}@${POSTGRESQL_MASTER_IP}/${POSTGRESQL_DATABASE}" -c "SELECT 1;" && return 0
     fi
     sleep 1
   done
diff --git a/13/Dockerfile.c9s b/13/Dockerfile.c9s
index 4b870a53..165cd357 100644
--- a/13/Dockerfile.c9s
+++ b/13/Dockerfile.c9s
@@ -42,7 +42,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 # safe in the future. This should *never* change, the last test is there
 # to make sure of that.
 RUN  { yum -y module enable postgresql:13 || :; } && \
-    INSTALL_PKGS="rsync tar gettext bind-utils nss_wrapper-libs postgresql-server postgresql-contrib" && \
+    INSTALL_PKGS="rsync tar gettext nss_wrapper-libs postgresql-server postgresql-contrib" && \
     INSTALL_PKGS="$INSTALL_PKGS pgaudit" && \
     INSTALL_PKGS="$INSTALL_PKGS procps-ng util-linux postgresql-upgrade" && \
     yum -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
diff --git a/13/Dockerfile.rhel8 b/13/Dockerfile.rhel8
index c736efdc..49ecc667 100644
--- a/13/Dockerfile.rhel8
+++ b/13/Dockerfile.rhel8
@@ -43,7 +43,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 # safe in the future. This should *never* change, the last test is there
 # to make sure of that.
 RUN yum -y module enable postgresql:13 && \
-    INSTALL_PKGS="rsync tar gettext bind-utils nss_wrapper-libs postgresql-server postgresql-contrib" && \
+    INSTALL_PKGS="rsync tar gettext nss_wrapper-libs postgresql-server postgresql-contrib" && \
     INSTALL_PKGS="$INSTALL_PKGS pgaudit" && \
     INSTALL_PKGS="$INSTALL_PKGS procps-ng util-linux postgresql-upgrade" && \
     yum -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
diff --git a/13/root/usr/bin/run-postgresql-slave b/13/root/usr/bin/run-postgresql-slave
index 586bf5d7..99e0b074 100755
--- a/13/root/usr/bin/run-postgresql-slave
+++ b/13/root/usr/bin/run-postgresql-slave
@@ -31,7 +31,7 @@ generate_passwd_file
 generate_postgresql_config
 
 wait_for_postgresql_master
-export MASTER_FQDN=$(postgresql_master_addr)
+export MASTER_FQDN=${POSTGRESQL_MASTER_IP}
 initialize_replica
 
 unset_env_vars
diff --git a/13/root/usr/share/container-scripts/postgresql/common.sh b/13/root/usr/share/container-scripts/postgresql/common.sh
index 369fd133..53cc9258 100644
--- a/13/root/usr/share/container-scripts/postgresql/common.sh
+++ b/13/root/usr/share/container-scripts/postgresql/common.sh
@@ -91,22 +91,6 @@ function unset_env_vars() {
   unset POSTGRESQL_{DATABASE,USER,PASSWORD,ADMIN_PASSWORD}
 }
 
-# postgresql_master_addr lookups the 'postgresql-master' DNS and get list of the available
-# endpoints. Each endpoint is a PostgreSQL container with the 'master' PostgreSQL running.
-function postgresql_master_addr() {
-  local service_name=${POSTGRESQL_MASTER_SERVICE_NAME:-postgresql-master}
-  local endpoints=$(dig ${service_name} A +search | grep ";${service_name}" | cut -d ';' -f 2 2>/dev/null)
-  # FIXME: This is for debugging (docker run)
-  if [ -v POSTGRESQL_MASTER_IP ]; then
-    endpoints=${POSTGRESQL_MASTER_IP:-}
-  fi
-  if [ -z "$endpoints" ]; then
-    >&2 echo "Failed to resolve PostgreSQL master IP address"
-    exit 3
-  fi
-  echo -n "$(echo $endpoints | cut -d ' ' -f 1)"
-}
-
 # Converts the version in format x.y or x.y.z to a number.
 version2number ()
 {
@@ -290,12 +274,11 @@ function set_pgdata ()
 
 function wait_for_postgresql_master() {
   while true; do
-    master_fqdn=$(postgresql_master_addr)
-    echo "Waiting for PostgreSQL master (${master_fqdn}) to accept connections ..."
+    echo "Waiting for PostgreSQL master (${POSTGRESQL_MASTER_IP}) to accept connections ..."
     if [ -v POSTGRESQL_ADMIN_PASSWORD ]; then
-      PGPASSWORD=${POSTGRESQL_ADMIN_PASSWORD} psql "postgresql://postgres@${master_fqdn}" -c "SELECT 1;" && return 0
+      PGPASSWORD=${POSTGRESQL_ADMIN_PASSWORD} psql "postgresql://postgres@${POSTGRESQL_MASTER_IP}" -c "SELECT 1;" && return 0
     else
-      PGPASSWORD=${POSTGRESQL_PASSWORD} psql "postgresql://${POSTGRESQL_USER}@${master_fqdn}/${POSTGRESQL_DATABASE}" -c "SELECT 1;" && return 0
+      PGPASSWORD=${POSTGRESQL_PASSWORD} psql "postgresql://${POSTGRESQL_USER}@${POSTGRESQL_MASTER_IP}/${POSTGRESQL_DATABASE}" -c "SELECT 1;" && return 0
     fi
     sleep 1
   done
diff --git a/15/Dockerfile.c9s b/15/Dockerfile.c9s
index e78d45b8..f174a569 100644
--- a/15/Dockerfile.c9s
+++ b/15/Dockerfile.c9s
@@ -42,7 +42,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 # safe in the future. This should *never* change, the last test is there
 # to make sure of that.
 RUN  { yum -y module enable postgresql:15 || :; } && \
-    INSTALL_PKGS="rsync tar gettext bind-utils nss_wrapper-libs postgresql-server postgresql-contrib" && \
+    INSTALL_PKGS="rsync tar gettext nss_wrapper-libs postgresql-server postgresql-contrib" && \
     INSTALL_PKGS="$INSTALL_PKGS pgaudit" && \
     INSTALL_PKGS="$INSTALL_PKGS procps-ng util-linux postgresql-upgrade" && \
     yum -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
diff --git a/15/Dockerfile.fedora b/15/Dockerfile.fedora
index 5940bee6..3706c19b 100644
--- a/15/Dockerfile.fedora
+++ b/15/Dockerfile.fedora
@@ -44,7 +44,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 # This image must forever use UID 26 for postgres user so our volumes are
 # safe in the future. This should *never* change, the last test is there
 # to make sure of that.
-RUN INSTALL_PKGS="rsync tar gettext bind-utils postgresql15-server postgresql15-contrib nss_wrapper postgresql15-upgrade procps-ng util-linux" && \
+RUN INSTALL_PKGS="rsync tar gettext postgresql15-server postgresql15-contrib nss_wrapper postgresql15-upgrade procps-ng util-linux" && \
     INSTALL_PKGS+=" findutils xz" && \
     INSTALL_PKGS+=" postgresql15-pgaudit" && \
     dnf -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
diff --git a/15/Dockerfile.rhel8 b/15/Dockerfile.rhel8
index 302ee20f..80df6705 100644
--- a/15/Dockerfile.rhel8
+++ b/15/Dockerfile.rhel8
@@ -43,7 +43,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 # safe in the future. This should *never* change, the last test is there
 # to make sure of that.
 RUN yum -y module enable postgresql:15 && \
-    INSTALL_PKGS="rsync tar gettext bind-utils nss_wrapper-libs postgresql-server postgresql-contrib" && \
+    INSTALL_PKGS="rsync tar gettext nss_wrapper-libs postgresql-server postgresql-contrib" && \
     INSTALL_PKGS="$INSTALL_PKGS pgaudit" && \
     INSTALL_PKGS="$INSTALL_PKGS procps-ng util-linux postgresql-upgrade" && \
     yum -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
diff --git a/15/root/usr/bin/run-postgresql-slave b/15/root/usr/bin/run-postgresql-slave
index 586bf5d7..99e0b074 100755
--- a/15/root/usr/bin/run-postgresql-slave
+++ b/15/root/usr/bin/run-postgresql-slave
@@ -31,7 +31,7 @@ generate_passwd_file
 generate_postgresql_config
 
 wait_for_postgresql_master
-export MASTER_FQDN=$(postgresql_master_addr)
+export MASTER_FQDN=${POSTGRESQL_MASTER_IP}
 initialize_replica
 
 unset_env_vars
diff --git a/15/root/usr/share/container-scripts/postgresql/common.sh b/15/root/usr/share/container-scripts/postgresql/common.sh
index 76a2eb0f..5394d44a 100644
--- a/15/root/usr/share/container-scripts/postgresql/common.sh
+++ b/15/root/usr/share/container-scripts/postgresql/common.sh
@@ -91,22 +91,6 @@ function unset_env_vars() {
   unset POSTGRESQL_{DATABASE,USER,PASSWORD,ADMIN_PASSWORD}
 }
 
-# postgresql_master_addr lookups the 'postgresql-master' DNS and get list of the available
-# endpoints. Each endpoint is a PostgreSQL container with the 'master' PostgreSQL running.
-function postgresql_master_addr() {
-  local service_name=${POSTGRESQL_MASTER_SERVICE_NAME:-postgresql-master}
-  local endpoints=$(dig ${service_name} A +search | grep ";${service_name}" | cut -d ';' -f 2 2>/dev/null)
-  # FIXME: This is for debugging (docker run)
-  if [ -v POSTGRESQL_MASTER_IP ]; then
-    endpoints=${POSTGRESQL_MASTER_IP:-}
-  fi
-  if [ -z "$endpoints" ]; then
-    >&2 echo "Failed to resolve PostgreSQL master IP address"
-    exit 3
-  fi
-  echo -n "$(echo $endpoints | cut -d ' ' -f 1)"
-}
-
 # Converts the version in format x.y or x.y.z to a number.
 version2number ()
 {
@@ -290,12 +274,11 @@ function set_pgdata ()
 
 function wait_for_postgresql_master() {
   while true; do
-    master_fqdn=$(postgresql_master_addr)
-    echo "Waiting for PostgreSQL master (${master_fqdn}) to accept connections ..."
+    echo "Waiting for PostgreSQL master (${POSTGRESQL_MASTER_IP}) to accept connections ..."
     if [ -v POSTGRESQL_ADMIN_PASSWORD ]; then
-      PGPASSWORD=${POSTGRESQL_ADMIN_PASSWORD} psql "postgresql://postgres@${master_fqdn}" -c "SELECT 1;" && return 0
+      PGPASSWORD=${POSTGRESQL_ADMIN_PASSWORD} psql "postgresql://postgres@${POSTGRESQL_MASTER_IP}" -c "SELECT 1;" && return 0
     else
-      PGPASSWORD=${POSTGRESQL_PASSWORD} psql "postgresql://${POSTGRESQL_USER}@${master_fqdn}/${POSTGRESQL_DATABASE}" -c "SELECT 1;" && return 0
+      PGPASSWORD=${POSTGRESQL_PASSWORD} psql "postgresql://${POSTGRESQL_USER}@${POSTGRESQL_MASTER_IP}/${POSTGRESQL_DATABASE}" -c "SELECT 1;" && return 0
     fi
     sleep 1
   done
diff --git a/16/Dockerfile.c10s b/16/Dockerfile.c10s
index 388dcdb8..0b3a80f3 100644
--- a/16/Dockerfile.c10s
+++ b/16/Dockerfile.c10s
@@ -41,7 +41,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 # This image must forever use UID 26 for postgres user so our volumes are
 # safe in the future. This should *never* change, the last test is there
 # to make sure of that.
-RUN INSTALL_PKGS="rsync tar gettext-envsubst bind-utils nss_wrapper-libs glibc-locale-source xz" && \
+RUN INSTALL_PKGS="rsync tar gettext-envsubst nss_wrapper-libs glibc-locale-source xz" && \
     PSQL_PKGS="postgresql16-server postgresql16-contrib postgresql16-upgrade" && \
     INSTALL_PKGS="$INSTALL_PKGS pgaudit" && \
     yum -y --setopt=tsflags=nodocs install $INSTALL_PKGS $PSQL_PKGS  && \
diff --git a/16/Dockerfile.c9s b/16/Dockerfile.c9s
index 9eaa70c3..127f64a5 100644
--- a/16/Dockerfile.c9s
+++ b/16/Dockerfile.c9s
@@ -42,7 +42,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 # safe in the future. This should *never* change, the last test is there
 # to make sure of that.
 RUN  { yum -y module enable postgresql:16 || :; } && \
-    INSTALL_PKGS="rsync tar gettext bind-utils nss_wrapper-libs postgresql-server postgresql-contrib" && \
+    INSTALL_PKGS="rsync tar gettext nss_wrapper-libs postgresql-server postgresql-contrib" && \
     INSTALL_PKGS="$INSTALL_PKGS pgaudit" && \
     INSTALL_PKGS="$INSTALL_PKGS procps-ng util-linux postgresql-upgrade" && \
     yum -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
diff --git a/16/Dockerfile.fedora b/16/Dockerfile.fedora
index 15ba45d1..1edab58b 100644
--- a/16/Dockerfile.fedora
+++ b/16/Dockerfile.fedora
@@ -44,7 +44,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 # This image must forever use UID 26 for postgres user so our volumes are
 # safe in the future. This should *never* change, the last test is there
 # to make sure of that.
-RUN INSTALL_PKGS="rsync tar gettext bind-utils postgresql-server postgresql-contrib nss_wrapper " && \
+RUN INSTALL_PKGS="rsync tar gettext postgresql-server postgresql-contrib nss_wrapper " && \
     INSTALL_PKGS+=" procps-ng util-linux postgresql-upgrade" && \
     INSTALL_PKGS+=" findutils xz" && \
     INSTALL_PKGS+=" pgaudit" && \
diff --git a/16/Dockerfile.rhel10 b/16/Dockerfile.rhel10
index 9ec4cf1a..4c3fac4a 100644
--- a/16/Dockerfile.rhel10
+++ b/16/Dockerfile.rhel10
@@ -41,7 +41,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 # This image must forever use UID 26 for postgres user so our volumes are
 # safe in the future. This should *never* change, the last test is there
 # to make sure of that.
-RUN INSTALL_PKGS="rsync tar gettext-envsubst bind-utils nss_wrapper-libs glibc-locale-source xz" && \
+RUN INSTALL_PKGS="rsync tar gettext-envsubst nss_wrapper-libs glibc-locale-source xz" && \
     PSQL_PKGS="postgresql16-server postgresql16-contrib" && \
     INSTALL_PKGS="$INSTALL_PKGS pgaudit" && \
     INSTALL_PKGS="$INSTALL_PKGS procps-ng util-linux postgresql-upgrade" && \
diff --git a/16/Dockerfile.rhel8 b/16/Dockerfile.rhel8
index caeb622d..88aae963 100644
--- a/16/Dockerfile.rhel8
+++ b/16/Dockerfile.rhel8
@@ -43,7 +43,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 # safe in the future. This should *never* change, the last test is there
 # to make sure of that.
 RUN yum -y module enable postgresql:16 && \
-    INSTALL_PKGS="rsync tar gettext bind-utils nss_wrapper-libs postgresql-server postgresql-contrib" && \
+    INSTALL_PKGS="rsync tar gettext nss_wrapper-libs postgresql-server postgresql-contrib" && \
     INSTALL_PKGS="$INSTALL_PKGS pgaudit" && \
     INSTALL_PKGS="$INSTALL_PKGS procps-ng util-linux postgresql-upgrade" && \
     yum -y --setopt=tsflags=nodocs install $INSTALL_PKGS && \
diff --git a/16/root/usr/bin/run-postgresql-slave b/16/root/usr/bin/run-postgresql-slave
index 586bf5d7..99e0b074 100755
--- a/16/root/usr/bin/run-postgresql-slave
+++ b/16/root/usr/bin/run-postgresql-slave
@@ -31,7 +31,7 @@ generate_passwd_file
 generate_postgresql_config
 
 wait_for_postgresql_master
-export MASTER_FQDN=$(postgresql_master_addr)
+export MASTER_FQDN=${POSTGRESQL_MASTER_IP}
 initialize_replica
 
 unset_env_vars
diff --git a/16/root/usr/share/container-scripts/postgresql/common.sh b/16/root/usr/share/container-scripts/postgresql/common.sh
index fdb4410e..7aca18ed 100644
--- a/16/root/usr/share/container-scripts/postgresql/common.sh
+++ b/16/root/usr/share/container-scripts/postgresql/common.sh
@@ -91,22 +91,6 @@ function unset_env_vars() {
   unset POSTGRESQL_{DATABASE,USER,PASSWORD,ADMIN_PASSWORD}
 }
 
-# postgresql_master_addr lookups the 'postgresql-master' DNS and get list of the available
-# endpoints. Each endpoint is a PostgreSQL container with the 'master' PostgreSQL running.
-function postgresql_master_addr() {
-  local service_name=${POSTGRESQL_MASTER_SERVICE_NAME:-postgresql-master}
-  local endpoints=$(dig ${service_name} A +search | grep ";${service_name}" | cut -d ';' -f 2 2>/dev/null)
-  # FIXME: This is for debugging (docker run)
-  if [ -v POSTGRESQL_MASTER_IP ]; then
-    endpoints=${POSTGRESQL_MASTER_IP:-}
-  fi
-  if [ -z "$endpoints" ]; then
-    >&2 echo "Failed to resolve PostgreSQL master IP address"
-    exit 3
-  fi
-  echo -n "$(echo $endpoints | cut -d ' ' -f 1)"
-}
-
 # Converts the version in format x.y or x.y.z to a number.
 version2number ()
 {
@@ -290,12 +274,11 @@ function set_pgdata ()
 
 function wait_for_postgresql_master() {
   while true; do
-    master_fqdn=$(postgresql_master_addr)
-    echo "Waiting for PostgreSQL master (${master_fqdn}) to accept connections ..."
+    echo "Waiting for PostgreSQL master (${POSTGRESQL_MASTER_IP}) to accept connections ..."
     if [ -v POSTGRESQL_ADMIN_PASSWORD ]; then
-      PGPASSWORD=${POSTGRESQL_ADMIN_PASSWORD} psql "postgresql://postgres@${master_fqdn}" -c "SELECT 1;" && return 0
+      PGPASSWORD=${POSTGRESQL_ADMIN_PASSWORD} psql "postgresql://postgres@${POSTGRESQL_MASTER_IP}" -c "SELECT 1;" && return 0
     else
-      PGPASSWORD=${POSTGRESQL_PASSWORD} psql "postgresql://${POSTGRESQL_USER}@${master_fqdn}/${POSTGRESQL_DATABASE}" -c "SELECT 1;" && return 0
+      PGPASSWORD=${POSTGRESQL_PASSWORD} psql "postgresql://${POSTGRESQL_USER}@${POSTGRESQL_MASTER_IP}/${POSTGRESQL_DATABASE}" -c "SELECT 1;" && return 0
     fi
     sleep 1
   done
diff --git a/src/Dockerfile b/src/Dockerfile
index d06f414a..a14c383c 100644
--- a/src/Dockerfile
+++ b/src/Dockerfile
@@ -54,7 +54,7 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 {{ spec.repo_enable_reason }}
 {% endif %}
 {% if spec.prod == "c10s" or spec.prod == "rhel10" %}
-RUN INSTALL_PKGS="rsync tar gettext-envsubst bind-utils nss_wrapper-libs glibc-locale-source xz" && \
+RUN INSTALL_PKGS="rsync tar gettext-envsubst nss_wrapper-libs glibc-locale-source xz" && \
     PSQL_PKGS="{{ spec.pkgs }}" && \
 {% elif spec.prod == "rhel9" and spec.version == "13" %} \
 RUN INSTALL_PKGS="rsync tar gettext bind9.18-utils nss_wrapper-libs {{ spec.pkgs }}" && \
@@ -63,7 +63,7 @@ RUN {{ spec.environment_setup }}
     INSTALL_PKGS="rsync tar gettext bind9.18-utils nss_wrapper-libs {{ spec.pkgs }}" && \
 {% else %}
 RUN {{ spec.environment_setup }}
-    INSTALL_PKGS="rsync tar gettext bind-utils nss_wrapper-libs {{ spec.pkgs }}" && \
+    INSTALL_PKGS="rsync tar gettext nss_wrapper-libs {{ spec.pkgs }}" && \
 {% endif %}
 {% if spec.version not in ["9.6", "10", "11"] %}
     INSTALL_PKGS="$INSTALL_PKGS pgaudit" && \
diff --git a/src/Dockerfile.fedora b/src/Dockerfile.fedora
index 5078ddd8..8a1b9381 100644
--- a/src/Dockerfile.fedora
+++ b/src/Dockerfile.fedora
@@ -49,10 +49,10 @@ COPY root/usr/libexec/fix-permissions /usr/libexec/fix-permissions
 # safe in the future. This should *never* change, the last test is there
 # to make sure of that.
 {% if spec.version == "16" %}
-RUN INSTALL_PKGS="rsync tar gettext bind-utils postgresql-server postgresql-contrib nss_wrapper " && \
+RUN INSTALL_PKGS="rsync tar gettext postgresql-server postgresql-contrib nss_wrapper " && \
     INSTALL_PKGS+=" procps-ng util-linux postgresql-upgrade" && \
 {% else %}
-RUN INSTALL_PKGS="rsync tar gettext bind-utils postgresql{{ spec.short }}-server postgresql{{ spec.short }}-contrib nss_wrapper postgresql{{ spec.short }}-upgrade procps-ng util-linux" && \
+RUN INSTALL_PKGS="rsync tar gettext postgresql{{ spec.short }}-server postgresql{{ spec.short }}-contrib nss_wrapper postgresql{{ spec.short }}-upgrade procps-ng util-linux" && \
 {% endif %}
     INSTALL_PKGS+=" findutils xz" && \
 {% if spec.version == "16" %}
diff --git a/src/root/usr/bin/run-postgresql-slave b/src/root/usr/bin/run-postgresql-slave
index 6a70d831..b342458f 100755
--- a/src/root/usr/bin/run-postgresql-slave
+++ b/src/root/usr/bin/run-postgresql-slave
@@ -37,7 +37,7 @@ generate_passwd_file
 generate_postgresql_config
 
 wait_for_postgresql_master
-export MASTER_FQDN=$(postgresql_master_addr)
+export MASTER_FQDN=${POSTGRESQL_MASTER_IP}
 initialize_replica
 
 unset_env_vars
diff --git a/src/root/usr/share/container-scripts/postgresql/common.sh b/src/root/usr/share/container-scripts/postgresql/common.sh
index bdad9f9b..e233111c 100644
--- a/src/root/usr/share/container-scripts/postgresql/common.sh
+++ b/src/root/usr/share/container-scripts/postgresql/common.sh
@@ -92,22 +92,6 @@ function unset_env_vars() {
   unset POSTGRESQL_{DATABASE,USER,PASSWORD,ADMIN_PASSWORD}
 }
 
-# postgresql_master_addr lookups the 'postgresql-master' DNS and get list of the available
-# endpoints. Each endpoint is a PostgreSQL container with the 'master' PostgreSQL running.
-function postgresql_master_addr() {
-  local service_name=${POSTGRESQL_MASTER_SERVICE_NAME:-postgresql-master}
-  local endpoints=$(dig ${service_name} A +search | grep ";${service_name}" | cut -d ';' -f 2 2>/dev/null)
-  # FIXME: This is for debugging (docker run)
-  if [ -v POSTGRESQL_MASTER_IP ]; then
-    endpoints=${POSTGRESQL_MASTER_IP:-}
-  fi
-  if [ -z "$endpoints" ]; then
-    >&2 echo "Failed to resolve PostgreSQL master IP address"
-    exit 3
-  fi
-  echo -n "$(echo $endpoints | cut -d ' ' -f 1)"
-}
-
 # Converts the version in format x.y or x.y.z to a number.
 version2number ()
 {
@@ -291,12 +275,11 @@ function set_pgdata ()
 
 function wait_for_postgresql_master() {
   while true; do
-    master_fqdn=$(postgresql_master_addr)
-    echo "Waiting for PostgreSQL master (${master_fqdn}) to accept connections ..."
+    echo "Waiting for PostgreSQL master (${POSTGRESQL_MASTER_IP}) to accept connections ..."
     if [ -v POSTGRESQL_ADMIN_PASSWORD ]; then
-      PGPASSWORD=${POSTGRESQL_ADMIN_PASSWORD} psql "postgresql://postgres@${master_fqdn}" -c "SELECT 1;" && return 0
+      PGPASSWORD=${POSTGRESQL_ADMIN_PASSWORD} psql "postgresql://postgres@${POSTGRESQL_MASTER_IP}" -c "SELECT 1;" && return 0
     else
-      PGPASSWORD=${POSTGRESQL_PASSWORD} psql "postgresql://${POSTGRESQL_USER}@${master_fqdn}/${POSTGRESQL_DATABASE}" -c "SELECT 1;" && return 0
+      PGPASSWORD=${POSTGRESQL_PASSWORD} psql "postgresql://${POSTGRESQL_USER}@${POSTGRESQL_MASTER_IP}/${POSTGRESQL_DATABASE}" -c "SELECT 1;" && return 0
     fi
     sleep 1
   done
diff --git a/test/test-lib-postgresql.sh b/test/test-lib-postgresql.sh
index 8d0132fb..84f2af0f 100644
--- a/test/test-lib-postgresql.sh
+++ b/test/test-lib-postgresql.sh
@@ -59,7 +59,7 @@ function test_postgresql_imagestream() {
   TEMPLATES="postgresql-ephemeral-template.json
   postgresql-persistent-template.json"
   for template in $TEMPLATES; do
-    ct_os_test_image_stream_template "${THISDIR}/imagestreams/postgresql-${OS%[0-9]*}.json" "${THISDIR}/examples/${template}" postgresql "-p POSTGRESQL_VERSION=${VERSION}${tag}"
+    ct_os_test_image_stream_template "${THISDIR}/imagestreams/postgresql-${OS//[0-9]/}.json" "${THISDIR}/examples/${template}" postgresql "-p POSTGRESQL_VERSION=${VERSION}${tag}"
   done
 }