diff --git a/Dockerfiles/web-apache-mysql/alpine/docker-entrypoint.sh b/Dockerfiles/web-apache-mysql/alpine/docker-entrypoint.sh
index 7cf62a20d..b861b88c2 100755
--- a/Dockerfiles/web-apache-mysql/alpine/docker-entrypoint.sh
+++ b/Dockerfiles/web-apache-mysql/alpine/docker-entrypoint.sh
@@ -68,12 +68,14 @@ file_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
@@ -83,11 +85,6 @@ 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 0fba0b331..59a483466 100755
--- a/Dockerfiles/web-apache-mysql/centos/docker-entrypoint.sh
+++ b/Dockerfiles/web-apache-mysql/centos/docker-entrypoint.sh
@@ -68,12 +68,14 @@ file_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
@@ -83,11 +85,6 @@ 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 0fba0b331..59a483466 100755
--- a/Dockerfiles/web-apache-mysql/ol/docker-entrypoint.sh
+++ b/Dockerfiles/web-apache-mysql/ol/docker-entrypoint.sh
@@ -68,12 +68,14 @@ file_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
@@ -83,11 +85,6 @@ 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 3f5fd3f87..6edebed35 100755
--- a/Dockerfiles/web-apache-mysql/ubuntu/docker-entrypoint.sh
+++ b/Dockerfiles/web-apache-mysql/ubuntu/docker-entrypoint.sh
@@ -68,12 +68,14 @@ file_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
@@ -83,11 +85,6 @@ 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 794bb0f72..a549e1487 100755
--- a/Dockerfiles/web-nginx-mysql/alpine/docker-entrypoint.sh
+++ b/Dockerfiles/web-nginx-mysql/alpine/docker-entrypoint.sh
@@ -74,12 +74,14 @@ file_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
@@ -89,11 +91,6 @@ 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 7ab6bd490..fbdbfb58a 100755
--- a/Dockerfiles/web-nginx-mysql/centos/docker-entrypoint.sh
+++ b/Dockerfiles/web-nginx-mysql/centos/docker-entrypoint.sh
@@ -74,12 +74,14 @@ file_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
@@ -89,11 +91,6 @@ 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 7ab6bd490..fbdbfb58a 100755
--- a/Dockerfiles/web-nginx-mysql/ol/docker-entrypoint.sh
+++ b/Dockerfiles/web-nginx-mysql/ol/docker-entrypoint.sh
@@ -74,12 +74,14 @@ file_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
@@ -89,11 +91,6 @@ 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 7ab6bd490..fbdbfb58a 100755
--- a/Dockerfiles/web-nginx-mysql/rhel/docker-entrypoint.sh
+++ b/Dockerfiles/web-nginx-mysql/rhel/docker-entrypoint.sh
@@ -74,12 +74,14 @@ file_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
@@ -89,11 +91,6 @@ 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 9238281bc..41974659b 100755
--- a/Dockerfiles/web-nginx-mysql/ubuntu/docker-entrypoint.sh
+++ b/Dockerfiles/web-nginx-mysql/ubuntu/docker-entrypoint.sh
@@ -74,12 +74,14 @@ file_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
@@ -89,11 +91,6 @@ 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() {