diff --git a/bitnami/postgresql-repmgr/11/ol-7/Dockerfile b/bitnami/postgresql-repmgr/11/ol-7/Dockerfile
index 5f64a77e843f..3910558b640b 100644
--- a/bitnami/postgresql-repmgr/11/ol-7/Dockerfile
+++ b/bitnami/postgresql-repmgr/11/ol-7/Dockerfile
@@ -17,7 +17,7 @@ COPY rootfs /
 RUN rpm -Uvh --nodeps $(repoquery --location nss_wrapper)
 RUN /postunpack.sh
 ENV BITNAMI_APP_NAME="postgresql-repmgr" \
-    BITNAMI_IMAGE_VERSION="11.5.0-ol-7-r29" \
+    BITNAMI_IMAGE_VERSION="11.5.0-ol-7-r30" \
     NAMI_PREFIX="/.nami" \
     NSS_WRAPPER_LIB="/usr/lib64/libnss_wrapper.so" \
     PATH="/opt/bitnami/postgresql-repmgr/bin:/opt/bitnami/repmgr/bin:/opt/bitnami/postgresql/bin:$PATH"
diff --git a/bitnami/postgresql-repmgr/11/ol-7/prebuildfs/libfs.sh b/bitnami/postgresql-repmgr/11/ol-7/prebuildfs/libfs.sh
index 965ec431b898..10a24735c096 100644
--- a/bitnami/postgresql-repmgr/11/ol-7/prebuildfs/libfs.sh
+++ b/bitnami/postgresql-repmgr/11/ol-7/prebuildfs/libfs.sh
@@ -35,7 +35,7 @@ ensure_dir_exists() {
     local owner="${2:-}"
 
     mkdir -p "${dir}"
-    if [[ "$owner" != "" ]]; then
+    if [[ -n $owner ]]; then
         owned_by "$dir" "$owner"
     fi
 }
diff --git a/bitnami/postgresql-repmgr/11/ol-7/prebuildfs/libnet.sh b/bitnami/postgresql-repmgr/11/ol-7/prebuildfs/libnet.sh
index 8c34b4f8ca7d..f884b7661fd7 100644
--- a/bitnami/postgresql-repmgr/11/ol-7/prebuildfs/libnet.sh
+++ b/bitnami/postgresql-repmgr/11/ol-7/prebuildfs/libnet.sh
@@ -13,7 +13,7 @@
 #########################
 dns_lookup() {
     local host="${1:?host is missing}"
-    getent ahosts "$host" | awk '/STREAM/ {print $1 }'    
+    getent ahosts "$host" | awk '/STREAM/ {print $1 }'
 }
 
 ########################
@@ -36,9 +36,9 @@ get_machine_ip() {
 #########################
 is_hostname_resolved() {
     local -r host="${1:?missing value}"
-    if dns_lookup "$host" > /dev/null; then
+    if [[ -n "$(dns_lookup "$host")" ]]; then
         true
     else
-        false 
+        false
     fi
 }
diff --git a/bitnami/postgresql-repmgr/README.md b/bitnami/postgresql-repmgr/README.md
index aa6be30ded20..d772d8bdfd02 100644
--- a/bitnami/postgresql-repmgr/README.md
+++ b/bitnami/postgresql-repmgr/README.md
@@ -46,7 +46,7 @@ Learn more about the Bitnami tagging policy and the difference between rolling t
 * [`12-ol-7`, `12.0.0-ol-7-r2` (12/ol-7/Dockerfile)](https://github.com/bitnami/bitnami-docker-postgresql-repmgr/blob/12.0.0-ol-7-r2/12/ol-7/Dockerfile)
 * [`12-debian-9`, `12.0.0-debian-9-r3`, `12`, `12.0.0`, `12.0.0-r3` (12/debian-9/Dockerfile)](https://github.com/bitnami/bitnami-docker-postgresql-repmgr/blob/12.0.0-debian-9-r3/12/debian-9/Dockerfile)
 * [`12-centos-7`, `12.0.0-centos-7-r3` (12/centos-7/Dockerfile)](https://github.com/bitnami/bitnami-docker-postgresql-repmgr/blob/12.0.0-centos-7-r3/12/centos-7/Dockerfile)
-* [`11-ol-7`, `11.5.0-ol-7-r29` (11/ol-7/Dockerfile)](https://github.com/bitnami/bitnami-docker-postgresql-repmgr/blob/11.5.0-ol-7-r29/11/ol-7/Dockerfile)
+* [`11-ol-7`, `11.5.0-ol-7-r30` (11/ol-7/Dockerfile)](https://github.com/bitnami/bitnami-docker-postgresql-repmgr/blob/11.5.0-ol-7-r30/11/ol-7/Dockerfile)
 * [`11-debian-9`, `11.5.0-debian-9-r23`, `11`, `11.5.0`, `11.5.0-r23`, `latest` (11/debian-9/Dockerfile)](https://github.com/bitnami/bitnami-docker-postgresql-repmgr/blob/11.5.0-debian-9-r23/11/debian-9/Dockerfile)
 * [`11-centos-7`, `11.5.0-centos-7-r30` (11/centos-7/Dockerfile)](https://github.com/bitnami/bitnami-docker-postgresql-repmgr/blob/11.5.0-centos-7-r30/11/centos-7/Dockerfile)
 * [`10-ol-7`, `10.10.0-ol-7-r28` (10/ol-7/Dockerfile)](https://github.com/bitnami/bitnami-docker-postgresql-repmgr/blob/10.10.0-ol-7-r28/10/ol-7/Dockerfile)