diff --git a/Dockerfiles/server-pgsql/alpine/docker-entrypoint.sh b/Dockerfiles/server-pgsql/alpine/docker-entrypoint.sh
index f8cfb4c9c..dad108fef 100755
--- a/Dockerfiles/server-pgsql/alpine/docker-entrypoint.sh
+++ b/Dockerfiles/server-pgsql/alpine/docker-entrypoint.sh
@@ -185,7 +185,7 @@ check_variables_postgresql() {
 
 check_db_connect_postgresql() {
     echo "********************"
-    if [[ "$DB_SERVER_HOST" != '""' ]]; then
+    if [ -n "${DB_SERVER_HOST}" ]; then
         echo "* DB_SERVER_HOST: ${DB_SERVER_HOST}"
         echo "* DB_SERVER_PORT: ${DB_SERVER_PORT}"
     else
diff --git a/Dockerfiles/server-pgsql/centos/docker-entrypoint.sh b/Dockerfiles/server-pgsql/centos/docker-entrypoint.sh
index f8cfb4c9c..dad108fef 100755
--- a/Dockerfiles/server-pgsql/centos/docker-entrypoint.sh
+++ b/Dockerfiles/server-pgsql/centos/docker-entrypoint.sh
@@ -185,7 +185,7 @@ check_variables_postgresql() {
 
 check_db_connect_postgresql() {
     echo "********************"
-    if [[ "$DB_SERVER_HOST" != '""' ]]; then
+    if [ -n "${DB_SERVER_HOST}" ]; then
         echo "* DB_SERVER_HOST: ${DB_SERVER_HOST}"
         echo "* DB_SERVER_PORT: ${DB_SERVER_PORT}"
     else
diff --git a/Dockerfiles/server-pgsql/ol/docker-entrypoint.sh b/Dockerfiles/server-pgsql/ol/docker-entrypoint.sh
index f8cfb4c9c..dad108fef 100755
--- a/Dockerfiles/server-pgsql/ol/docker-entrypoint.sh
+++ b/Dockerfiles/server-pgsql/ol/docker-entrypoint.sh
@@ -185,7 +185,7 @@ check_variables_postgresql() {
 
 check_db_connect_postgresql() {
     echo "********************"
-    if [[ "$DB_SERVER_HOST" != '""' ]]; then
+    if [ -n "${DB_SERVER_HOST}" ]; then
         echo "* DB_SERVER_HOST: ${DB_SERVER_HOST}"
         echo "* DB_SERVER_PORT: ${DB_SERVER_PORT}"
     else
diff --git a/Dockerfiles/server-pgsql/rhel/docker-entrypoint.sh b/Dockerfiles/server-pgsql/rhel/docker-entrypoint.sh
index f8cfb4c9c..dad108fef 100755
--- a/Dockerfiles/server-pgsql/rhel/docker-entrypoint.sh
+++ b/Dockerfiles/server-pgsql/rhel/docker-entrypoint.sh
@@ -185,7 +185,7 @@ check_variables_postgresql() {
 
 check_db_connect_postgresql() {
     echo "********************"
-    if [[ "$DB_SERVER_HOST" != '""' ]]; then
+    if [ -n "${DB_SERVER_HOST}" ]; then
         echo "* DB_SERVER_HOST: ${DB_SERVER_HOST}"
         echo "* DB_SERVER_PORT: ${DB_SERVER_PORT}"
     else
diff --git a/Dockerfiles/server-pgsql/ubuntu/docker-entrypoint.sh b/Dockerfiles/server-pgsql/ubuntu/docker-entrypoint.sh
index 6c3aa3c93..d70fe8ffd 100755
--- a/Dockerfiles/server-pgsql/ubuntu/docker-entrypoint.sh
+++ b/Dockerfiles/server-pgsql/ubuntu/docker-entrypoint.sh
@@ -185,7 +185,7 @@ check_variables_postgresql() {
 
 check_db_connect_postgresql() {
     echo "********************"
-    if [[ "$DB_SERVER_HOST" != '""' ]]; then
+    if [ -n "${DB_SERVER_HOST}" ]; then
         echo "* DB_SERVER_HOST: ${DB_SERVER_HOST}"
         echo "* DB_SERVER_PORT: ${DB_SERVER_PORT}"
     else