diff --git a/docker-entrypoint.sh b/docker-entrypoint.sh
index 66726a0ea2..3fb9374875 100755
--- a/docker-entrypoint.sh
+++ b/docker-entrypoint.sh
@@ -40,7 +40,7 @@ if [[ "$1" == apache2* ]] || [ "$1" == php-fpm ]; then
 		group="$(id -g)"
 	fi
 
-	if ! [ -e index.php -a -e wp-includes/version.php ]; then
+	if [ ! -e index.php ] && [ ! -e wp-includes/version.php ]; then
 		echo >&2 "WordPress not found in $PWD - copying now..."
 		if [ "$(ls -A)" ]; then
 			echo >&2 "WARNING: $PWD is not empty - press Ctrl+C now if this is an error!"
diff --git a/php5.6/apache/docker-entrypoint.sh b/php5.6/apache/docker-entrypoint.sh
index 66726a0ea2..3fb9374875 100755
--- a/php5.6/apache/docker-entrypoint.sh
+++ b/php5.6/apache/docker-entrypoint.sh
@@ -40,7 +40,7 @@ if [[ "$1" == apache2* ]] || [ "$1" == php-fpm ]; then
 		group="$(id -g)"
 	fi
 
-	if ! [ -e index.php -a -e wp-includes/version.php ]; then
+	if [ ! -e index.php ] && [ ! -e wp-includes/version.php ]; then
 		echo >&2 "WordPress not found in $PWD - copying now..."
 		if [ "$(ls -A)" ]; then
 			echo >&2 "WARNING: $PWD is not empty - press Ctrl+C now if this is an error!"
diff --git a/php5.6/fpm-alpine/docker-entrypoint.sh b/php5.6/fpm-alpine/docker-entrypoint.sh
index 66726a0ea2..3fb9374875 100755
--- a/php5.6/fpm-alpine/docker-entrypoint.sh
+++ b/php5.6/fpm-alpine/docker-entrypoint.sh
@@ -40,7 +40,7 @@ if [[ "$1" == apache2* ]] || [ "$1" == php-fpm ]; then
 		group="$(id -g)"
 	fi
 
-	if ! [ -e index.php -a -e wp-includes/version.php ]; then
+	if [ ! -e index.php ] && [ ! -e wp-includes/version.php ]; then
 		echo >&2 "WordPress not found in $PWD - copying now..."
 		if [ "$(ls -A)" ]; then
 			echo >&2 "WARNING: $PWD is not empty - press Ctrl+C now if this is an error!"
diff --git a/php5.6/fpm/docker-entrypoint.sh b/php5.6/fpm/docker-entrypoint.sh
index 66726a0ea2..3fb9374875 100755
--- a/php5.6/fpm/docker-entrypoint.sh
+++ b/php5.6/fpm/docker-entrypoint.sh
@@ -40,7 +40,7 @@ if [[ "$1" == apache2* ]] || [ "$1" == php-fpm ]; then
 		group="$(id -g)"
 	fi
 
-	if ! [ -e index.php -a -e wp-includes/version.php ]; then
+	if [ ! -e index.php ] && [ ! -e wp-includes/version.php ]; then
 		echo >&2 "WordPress not found in $PWD - copying now..."
 		if [ "$(ls -A)" ]; then
 			echo >&2 "WARNING: $PWD is not empty - press Ctrl+C now if this is an error!"
diff --git a/php7.0/apache/docker-entrypoint.sh b/php7.0/apache/docker-entrypoint.sh
index 66726a0ea2..3fb9374875 100755
--- a/php7.0/apache/docker-entrypoint.sh
+++ b/php7.0/apache/docker-entrypoint.sh
@@ -40,7 +40,7 @@ if [[ "$1" == apache2* ]] || [ "$1" == php-fpm ]; then
 		group="$(id -g)"
 	fi
 
-	if ! [ -e index.php -a -e wp-includes/version.php ]; then
+	if [ ! -e index.php ] && [ ! -e wp-includes/version.php ]; then
 		echo >&2 "WordPress not found in $PWD - copying now..."
 		if [ "$(ls -A)" ]; then
 			echo >&2 "WARNING: $PWD is not empty - press Ctrl+C now if this is an error!"
diff --git a/php7.0/fpm-alpine/docker-entrypoint.sh b/php7.0/fpm-alpine/docker-entrypoint.sh
index 66726a0ea2..3fb9374875 100755
--- a/php7.0/fpm-alpine/docker-entrypoint.sh
+++ b/php7.0/fpm-alpine/docker-entrypoint.sh
@@ -40,7 +40,7 @@ if [[ "$1" == apache2* ]] || [ "$1" == php-fpm ]; then
 		group="$(id -g)"
 	fi
 
-	if ! [ -e index.php -a -e wp-includes/version.php ]; then
+	if [ ! -e index.php ] && [ ! -e wp-includes/version.php ]; then
 		echo >&2 "WordPress not found in $PWD - copying now..."
 		if [ "$(ls -A)" ]; then
 			echo >&2 "WARNING: $PWD is not empty - press Ctrl+C now if this is an error!"
diff --git a/php7.0/fpm/docker-entrypoint.sh b/php7.0/fpm/docker-entrypoint.sh
index 66726a0ea2..3fb9374875 100755
--- a/php7.0/fpm/docker-entrypoint.sh
+++ b/php7.0/fpm/docker-entrypoint.sh
@@ -40,7 +40,7 @@ if [[ "$1" == apache2* ]] || [ "$1" == php-fpm ]; then
 		group="$(id -g)"
 	fi
 
-	if ! [ -e index.php -a -e wp-includes/version.php ]; then
+	if [ ! -e index.php ] && [ ! -e wp-includes/version.php ]; then
 		echo >&2 "WordPress not found in $PWD - copying now..."
 		if [ "$(ls -A)" ]; then
 			echo >&2 "WARNING: $PWD is not empty - press Ctrl+C now if this is an error!"
diff --git a/php7.1/apache/docker-entrypoint.sh b/php7.1/apache/docker-entrypoint.sh
index 66726a0ea2..3fb9374875 100755
--- a/php7.1/apache/docker-entrypoint.sh
+++ b/php7.1/apache/docker-entrypoint.sh
@@ -40,7 +40,7 @@ if [[ "$1" == apache2* ]] || [ "$1" == php-fpm ]; then
 		group="$(id -g)"
 	fi
 
-	if ! [ -e index.php -a -e wp-includes/version.php ]; then
+	if [ ! -e index.php ] && [ ! -e wp-includes/version.php ]; then
 		echo >&2 "WordPress not found in $PWD - copying now..."
 		if [ "$(ls -A)" ]; then
 			echo >&2 "WARNING: $PWD is not empty - press Ctrl+C now if this is an error!"
diff --git a/php7.1/fpm-alpine/docker-entrypoint.sh b/php7.1/fpm-alpine/docker-entrypoint.sh
index 66726a0ea2..3fb9374875 100755
--- a/php7.1/fpm-alpine/docker-entrypoint.sh
+++ b/php7.1/fpm-alpine/docker-entrypoint.sh
@@ -40,7 +40,7 @@ if [[ "$1" == apache2* ]] || [ "$1" == php-fpm ]; then
 		group="$(id -g)"
 	fi
 
-	if ! [ -e index.php -a -e wp-includes/version.php ]; then
+	if [ ! -e index.php ] && [ ! -e wp-includes/version.php ]; then
 		echo >&2 "WordPress not found in $PWD - copying now..."
 		if [ "$(ls -A)" ]; then
 			echo >&2 "WARNING: $PWD is not empty - press Ctrl+C now if this is an error!"
diff --git a/php7.1/fpm/docker-entrypoint.sh b/php7.1/fpm/docker-entrypoint.sh
index 66726a0ea2..3fb9374875 100755
--- a/php7.1/fpm/docker-entrypoint.sh
+++ b/php7.1/fpm/docker-entrypoint.sh
@@ -40,7 +40,7 @@ if [[ "$1" == apache2* ]] || [ "$1" == php-fpm ]; then
 		group="$(id -g)"
 	fi
 
-	if ! [ -e index.php -a -e wp-includes/version.php ]; then
+	if [ ! -e index.php ] && [ ! -e wp-includes/version.php ]; then
 		echo >&2 "WordPress not found in $PWD - copying now..."
 		if [ "$(ls -A)" ]; then
 			echo >&2 "WARNING: $PWD is not empty - press Ctrl+C now if this is an error!"
diff --git a/php7.2/apache/docker-entrypoint.sh b/php7.2/apache/docker-entrypoint.sh
index 66726a0ea2..3fb9374875 100755
--- a/php7.2/apache/docker-entrypoint.sh
+++ b/php7.2/apache/docker-entrypoint.sh
@@ -40,7 +40,7 @@ if [[ "$1" == apache2* ]] || [ "$1" == php-fpm ]; then
 		group="$(id -g)"
 	fi
 
-	if ! [ -e index.php -a -e wp-includes/version.php ]; then
+	if [ ! -e index.php ] && [ ! -e wp-includes/version.php ]; then
 		echo >&2 "WordPress not found in $PWD - copying now..."
 		if [ "$(ls -A)" ]; then
 			echo >&2 "WARNING: $PWD is not empty - press Ctrl+C now if this is an error!"
diff --git a/php7.2/fpm-alpine/docker-entrypoint.sh b/php7.2/fpm-alpine/docker-entrypoint.sh
index 66726a0ea2..3fb9374875 100755
--- a/php7.2/fpm-alpine/docker-entrypoint.sh
+++ b/php7.2/fpm-alpine/docker-entrypoint.sh
@@ -40,7 +40,7 @@ if [[ "$1" == apache2* ]] || [ "$1" == php-fpm ]; then
 		group="$(id -g)"
 	fi
 
-	if ! [ -e index.php -a -e wp-includes/version.php ]; then
+	if [ ! -e index.php ] && [ ! -e wp-includes/version.php ]; then
 		echo >&2 "WordPress not found in $PWD - copying now..."
 		if [ "$(ls -A)" ]; then
 			echo >&2 "WARNING: $PWD is not empty - press Ctrl+C now if this is an error!"
diff --git a/php7.2/fpm/docker-entrypoint.sh b/php7.2/fpm/docker-entrypoint.sh
index 66726a0ea2..3fb9374875 100755
--- a/php7.2/fpm/docker-entrypoint.sh
+++ b/php7.2/fpm/docker-entrypoint.sh
@@ -40,7 +40,7 @@ if [[ "$1" == apache2* ]] || [ "$1" == php-fpm ]; then
 		group="$(id -g)"
 	fi
 
-	if ! [ -e index.php -a -e wp-includes/version.php ]; then
+	if [ ! -e index.php ] && [ ! -e wp-includes/version.php ]; then
 		echo >&2 "WordPress not found in $PWD - copying now..."
 		if [ "$(ls -A)" ]; then
 			echo >&2 "WARNING: $PWD is not empty - press Ctrl+C now if this is an error!"