diff --git a/Dockerfiles/web-apache-mysql/alpine/docker-entrypoint.sh b/Dockerfiles/web-apache-mysql/alpine/docker-entrypoint.sh
index fdc75a274..13925f122 100755
--- a/Dockerfiles/web-apache-mysql/alpine/docker-entrypoint.sh
+++ b/Dockerfiles/web-apache-mysql/alpine/docker-entrypoint.sh
@@ -87,12 +87,14 @@ file_process_from_env() {
 
 # Check prerequisites for MySQL database
 check_variables() {
-    if [ ! -n "${DB_SERVER_SOCKET}" ]; then
-        : ${DB_SERVER_HOST:="mysql-server"}
-    else
-        DB_SERVER_HOST="localhost"
-    fi
     : ${DB_SERVER_PORT:="3306"}
+    if [ -n "${DB_SERVER_SOCKET}" ]; then
+        mysql_connect_args="-S ${DB_SERVER_SOCKET}"
+        DB_SERVER_HOST="localhost"
+    else
+        : ${DB_SERVER_HOST:="mysql-server"}
+        mysql_connect_args="-h ${DB_SERVER_HOST} -P ${DB_SERVER_PORT}"
+    fi
 
     file_env MYSQL_USER
     file_env MYSQL_PASSWORD
@@ -102,11 +104,6 @@ check_variables() {
 
     DB_SERVER_DBNAME=${MYSQL_DATABASE:-"zabbix"}
 
-    if [ ! -n "${DB_SERVER_SOCKET}" ]; then
-        mysql_connect_args="-h ${DB_SERVER_HOST} -P ${DB_SERVER_PORT}"
-    else
-        mysql_connect_args="-S ${DB_SERVER_SOCKET}"
-    fi
 }
 
 db_tls_params() {
diff --git a/Dockerfiles/web-apache-mysql/centos/docker-entrypoint.sh b/Dockerfiles/web-apache-mysql/centos/docker-entrypoint.sh
index 140f149b2..6cd473960 100755
--- a/Dockerfiles/web-apache-mysql/centos/docker-entrypoint.sh
+++ b/Dockerfiles/web-apache-mysql/centos/docker-entrypoint.sh
@@ -87,12 +87,14 @@ file_process_from_env() {
 
 # Check prerequisites for MySQL database
 check_variables() {
-    if [ ! -n "${DB_SERVER_SOCKET}" ]; then
-        : ${DB_SERVER_HOST:="mysql-server"}
-    else
-        DB_SERVER_HOST="localhost"
-    fi
     : ${DB_SERVER_PORT:="3306"}
+    if [ -n "${DB_SERVER_SOCKET}" ]; then
+        mysql_connect_args="-S ${DB_SERVER_SOCKET}"
+        DB_SERVER_HOST="localhost"
+    else
+        : ${DB_SERVER_HOST:="mysql-server"}
+        mysql_connect_args="-h ${DB_SERVER_HOST} -P ${DB_SERVER_PORT}"
+    fi
 
     file_env MYSQL_USER
     file_env MYSQL_PASSWORD
@@ -102,11 +104,6 @@ check_variables() {
 
     DB_SERVER_DBNAME=${MYSQL_DATABASE:-"zabbix"}
 
-    if [ ! -n "${DB_SERVER_SOCKET}" ]; then
-        mysql_connect_args="-h ${DB_SERVER_HOST} -P ${DB_SERVER_PORT}"
-    else
-        mysql_connect_args="-S ${DB_SERVER_SOCKET}"
-    fi
 }
 
 db_tls_params() {
diff --git a/Dockerfiles/web-apache-mysql/ol/docker-entrypoint.sh b/Dockerfiles/web-apache-mysql/ol/docker-entrypoint.sh
index 140f149b2..6cd473960 100755
--- a/Dockerfiles/web-apache-mysql/ol/docker-entrypoint.sh
+++ b/Dockerfiles/web-apache-mysql/ol/docker-entrypoint.sh
@@ -87,12 +87,14 @@ file_process_from_env() {
 
 # Check prerequisites for MySQL database
 check_variables() {
-    if [ ! -n "${DB_SERVER_SOCKET}" ]; then
-        : ${DB_SERVER_HOST:="mysql-server"}
-    else
-        DB_SERVER_HOST="localhost"
-    fi
     : ${DB_SERVER_PORT:="3306"}
+    if [ -n "${DB_SERVER_SOCKET}" ]; then
+        mysql_connect_args="-S ${DB_SERVER_SOCKET}"
+        DB_SERVER_HOST="localhost"
+    else
+        : ${DB_SERVER_HOST:="mysql-server"}
+        mysql_connect_args="-h ${DB_SERVER_HOST} -P ${DB_SERVER_PORT}"
+    fi
 
     file_env MYSQL_USER
     file_env MYSQL_PASSWORD
@@ -102,11 +104,6 @@ check_variables() {
 
     DB_SERVER_DBNAME=${MYSQL_DATABASE:-"zabbix"}
 
-    if [ ! -n "${DB_SERVER_SOCKET}" ]; then
-        mysql_connect_args="-h ${DB_SERVER_HOST} -P ${DB_SERVER_PORT}"
-    else
-        mysql_connect_args="-S ${DB_SERVER_SOCKET}"
-    fi
 }
 
 db_tls_params() {
diff --git a/Dockerfiles/web-apache-mysql/ubuntu/docker-entrypoint.sh b/Dockerfiles/web-apache-mysql/ubuntu/docker-entrypoint.sh
index c8ca94545..24736ed62 100755
--- a/Dockerfiles/web-apache-mysql/ubuntu/docker-entrypoint.sh
+++ b/Dockerfiles/web-apache-mysql/ubuntu/docker-entrypoint.sh
@@ -87,12 +87,14 @@ file_process_from_env() {
 
 # Check prerequisites for MySQL database
 check_variables() {
-    if [ ! -n "${DB_SERVER_SOCKET}" ]; then
-        : ${DB_SERVER_HOST:="mysql-server"}
-    else
-        DB_SERVER_HOST="localhost"
-    fi
     : ${DB_SERVER_PORT:="3306"}
+    if [ -n "${DB_SERVER_SOCKET}" ]; then
+        mysql_connect_args="-S ${DB_SERVER_SOCKET}"
+        DB_SERVER_HOST="localhost"
+    else
+        : ${DB_SERVER_HOST:="mysql-server"}
+        mysql_connect_args="-h ${DB_SERVER_HOST} -P ${DB_SERVER_PORT}"
+    fi
 
     file_env MYSQL_USER
     file_env MYSQL_PASSWORD
@@ -102,11 +104,6 @@ check_variables() {
 
     DB_SERVER_DBNAME=${MYSQL_DATABASE:-"zabbix"}
 
-    if [ ! -n "${DB_SERVER_SOCKET}" ]; then
-        mysql_connect_args="-h ${DB_SERVER_HOST} -P ${DB_SERVER_PORT}"
-    else
-        mysql_connect_args="-S ${DB_SERVER_SOCKET}"
-    fi
 }
 
 db_tls_params() {
diff --git a/Dockerfiles/web-nginx-mysql/alpine/docker-entrypoint.sh b/Dockerfiles/web-nginx-mysql/alpine/docker-entrypoint.sh
index 4a8e1628d..d9617e0bb 100755
--- a/Dockerfiles/web-nginx-mysql/alpine/docker-entrypoint.sh
+++ b/Dockerfiles/web-nginx-mysql/alpine/docker-entrypoint.sh
@@ -93,12 +93,14 @@ file_process_from_env() {
 
 # Check prerequisites for MySQL database
 check_variables() {
-    if [ ! -n "${DB_SERVER_SOCKET}" ]; then
-        : ${DB_SERVER_HOST:="mysql-server"}
-    else
-        DB_SERVER_HOST="localhost"
-    fi
     : ${DB_SERVER_PORT:="3306"}
+    if [ -n "${DB_SERVER_SOCKET}" ]; then
+        mysql_connect_args="-S ${DB_SERVER_SOCKET}"
+        DB_SERVER_HOST="localhost"
+    else
+        : ${DB_SERVER_HOST:="mysql-server"}
+        mysql_connect_args="-h ${DB_SERVER_HOST} -P ${DB_SERVER_PORT}"
+    fi
 
     file_env MYSQL_USER
     file_env MYSQL_PASSWORD
@@ -108,11 +110,6 @@ check_variables() {
 
     DB_SERVER_DBNAME=${MYSQL_DATABASE:-"zabbix"}
 
-    if [ ! -n "${DB_SERVER_SOCKET}" ]; then
-        mysql_connect_args="-h ${DB_SERVER_HOST} -P ${DB_SERVER_PORT}"
-    else
-        mysql_connect_args="-S ${DB_SERVER_SOCKET}"
-    fi
 }
 
 db_tls_params() {
diff --git a/Dockerfiles/web-nginx-mysql/centos/docker-entrypoint.sh b/Dockerfiles/web-nginx-mysql/centos/docker-entrypoint.sh
index c570461eb..2cc76dae0 100755
--- a/Dockerfiles/web-nginx-mysql/centos/docker-entrypoint.sh
+++ b/Dockerfiles/web-nginx-mysql/centos/docker-entrypoint.sh
@@ -93,12 +93,14 @@ file_process_from_env() {
 
 # Check prerequisites for MySQL database
 check_variables() {
-    if [ ! -n "${DB_SERVER_SOCKET}" ]; then
-        : ${DB_SERVER_HOST:="mysql-server"}
-    else
-        DB_SERVER_HOST="localhost"
-    fi
     : ${DB_SERVER_PORT:="3306"}
+    if [ -n "${DB_SERVER_SOCKET}" ]; then
+        mysql_connect_args="-S ${DB_SERVER_SOCKET}"
+        DB_SERVER_HOST="localhost"
+    else
+        : ${DB_SERVER_HOST:="mysql-server"}
+        mysql_connect_args="-h ${DB_SERVER_HOST} -P ${DB_SERVER_PORT}"
+    fi
 
     file_env MYSQL_USER
     file_env MYSQL_PASSWORD
@@ -108,11 +110,6 @@ check_variables() {
 
     DB_SERVER_DBNAME=${MYSQL_DATABASE:-"zabbix"}
 
-    if [ ! -n "${DB_SERVER_SOCKET}" ]; then
-        mysql_connect_args="-h ${DB_SERVER_HOST} -P ${DB_SERVER_PORT}"
-    else
-        mysql_connect_args="-S ${DB_SERVER_SOCKET}"
-    fi
 }
 
 db_tls_params() {
diff --git a/Dockerfiles/web-nginx-mysql/ol/docker-entrypoint.sh b/Dockerfiles/web-nginx-mysql/ol/docker-entrypoint.sh
index c570461eb..2cc76dae0 100755
--- a/Dockerfiles/web-nginx-mysql/ol/docker-entrypoint.sh
+++ b/Dockerfiles/web-nginx-mysql/ol/docker-entrypoint.sh
@@ -93,12 +93,14 @@ file_process_from_env() {
 
 # Check prerequisites for MySQL database
 check_variables() {
-    if [ ! -n "${DB_SERVER_SOCKET}" ]; then
-        : ${DB_SERVER_HOST:="mysql-server"}
-    else
-        DB_SERVER_HOST="localhost"
-    fi
     : ${DB_SERVER_PORT:="3306"}
+    if [ -n "${DB_SERVER_SOCKET}" ]; then
+        mysql_connect_args="-S ${DB_SERVER_SOCKET}"
+        DB_SERVER_HOST="localhost"
+    else
+        : ${DB_SERVER_HOST:="mysql-server"}
+        mysql_connect_args="-h ${DB_SERVER_HOST} -P ${DB_SERVER_PORT}"
+    fi
 
     file_env MYSQL_USER
     file_env MYSQL_PASSWORD
@@ -108,11 +110,6 @@ check_variables() {
 
     DB_SERVER_DBNAME=${MYSQL_DATABASE:-"zabbix"}
 
-    if [ ! -n "${DB_SERVER_SOCKET}" ]; then
-        mysql_connect_args="-h ${DB_SERVER_HOST} -P ${DB_SERVER_PORT}"
-    else
-        mysql_connect_args="-S ${DB_SERVER_SOCKET}"
-    fi
 }
 
 db_tls_params() {
diff --git a/Dockerfiles/web-nginx-mysql/rhel/docker-entrypoint.sh b/Dockerfiles/web-nginx-mysql/rhel/docker-entrypoint.sh
index c570461eb..2cc76dae0 100755
--- a/Dockerfiles/web-nginx-mysql/rhel/docker-entrypoint.sh
+++ b/Dockerfiles/web-nginx-mysql/rhel/docker-entrypoint.sh
@@ -93,12 +93,14 @@ file_process_from_env() {
 
 # Check prerequisites for MySQL database
 check_variables() {
-    if [ ! -n "${DB_SERVER_SOCKET}" ]; then
-        : ${DB_SERVER_HOST:="mysql-server"}
-    else
-        DB_SERVER_HOST="localhost"
-    fi
     : ${DB_SERVER_PORT:="3306"}
+    if [ -n "${DB_SERVER_SOCKET}" ]; then
+        mysql_connect_args="-S ${DB_SERVER_SOCKET}"
+        DB_SERVER_HOST="localhost"
+    else
+        : ${DB_SERVER_HOST:="mysql-server"}
+        mysql_connect_args="-h ${DB_SERVER_HOST} -P ${DB_SERVER_PORT}"
+    fi
 
     file_env MYSQL_USER
     file_env MYSQL_PASSWORD
@@ -108,11 +110,6 @@ check_variables() {
 
     DB_SERVER_DBNAME=${MYSQL_DATABASE:-"zabbix"}
 
-    if [ ! -n "${DB_SERVER_SOCKET}" ]; then
-        mysql_connect_args="-h ${DB_SERVER_HOST} -P ${DB_SERVER_PORT}"
-    else
-        mysql_connect_args="-S ${DB_SERVER_SOCKET}"
-    fi
 }
 
 db_tls_params() {
diff --git a/Dockerfiles/web-nginx-mysql/ubuntu/docker-entrypoint.sh b/Dockerfiles/web-nginx-mysql/ubuntu/docker-entrypoint.sh
index 5e36d87d1..ac67e5b03 100755
--- a/Dockerfiles/web-nginx-mysql/ubuntu/docker-entrypoint.sh
+++ b/Dockerfiles/web-nginx-mysql/ubuntu/docker-entrypoint.sh
@@ -93,12 +93,14 @@ file_process_from_env() {
 
 # Check prerequisites for MySQL database
 check_variables() {
-    if [ ! -n "${DB_SERVER_SOCKET}" ]; then
-        : ${DB_SERVER_HOST:="mysql-server"}
-    else
-        DB_SERVER_HOST="localhost"
-    fi
     : ${DB_SERVER_PORT:="3306"}
+    if [ -n "${DB_SERVER_SOCKET}" ]; then
+        mysql_connect_args="-S ${DB_SERVER_SOCKET}"
+        DB_SERVER_HOST="localhost"
+    else
+        : ${DB_SERVER_HOST:="mysql-server"}
+        mysql_connect_args="-h ${DB_SERVER_HOST} -P ${DB_SERVER_PORT}"
+    fi
 
     file_env MYSQL_USER
     file_env MYSQL_PASSWORD
@@ -108,11 +110,6 @@ check_variables() {
 
     DB_SERVER_DBNAME=${MYSQL_DATABASE:-"zabbix"}
 
-    if [ ! -n "${DB_SERVER_SOCKET}" ]; then
-        mysql_connect_args="-h ${DB_SERVER_HOST} -P ${DB_SERVER_PORT}"
-    else
-        mysql_connect_args="-S ${DB_SERVER_SOCKET}"
-    fi
 }
 
 db_tls_params() {