diff --git a/.test/config.sh b/.test/config.sh
new file mode 100755
index 0000000000..f220272073
--- /dev/null
+++ b/.test/config.sh
@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+
+# https://github.com/docker-library/official-images/blob/7629e0d0a836d0ec718a6e053753479227cf6825/test/config.sh
+
+imageTests[wordpress:apache]+='
+	wordpress-ensure-installed
+'
+imageTests[wordpress:fpm]+='
+	wordpress-ensure-installed
+'
diff --git a/.test/tests/wordpress-ensure-installed/run.sh b/.test/tests/wordpress-ensure-installed/run.sh
new file mode 100755
index 0000000000..cf583331cf
--- /dev/null
+++ b/.test/tests/wordpress-ensure-installed/run.sh
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+set -Eeuo pipefail
+
+docker run --rm "$1" sh -euc '
+	[ ! -s wp-includes/version.php ] || exit 1
+	docker-ensure-installed.sh
+	[ -s wp-includes/version.php ] || exit 1
+'
diff --git a/beta/php8.1/apache/docker-entrypoint.sh b/beta/php8.1/apache/docker-entrypoint.sh
index 95d3a6d977..dad730375c 100755
--- a/beta/php8.1/apache/docker-entrypoint.sh
+++ b/beta/php8.1/apache/docker-entrypoint.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
+if [[ "${1-}" == apache2* ]] || [ "${1-}" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
 	uid="$(id -u)"
 	gid="$(id -g)"
 	if [ "$uid" = '0' ]; then
-		case "$1" in
+		case "${1-}" in
 			apache2*)
 				user="${APACHE_RUN_USER:-www-data}"
 				group="${APACHE_RUN_GROUP:-www-data}"
diff --git a/beta/php8.1/fpm-alpine/docker-entrypoint.sh b/beta/php8.1/fpm-alpine/docker-entrypoint.sh
index 95d3a6d977..dad730375c 100755
--- a/beta/php8.1/fpm-alpine/docker-entrypoint.sh
+++ b/beta/php8.1/fpm-alpine/docker-entrypoint.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
+if [[ "${1-}" == apache2* ]] || [ "${1-}" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
 	uid="$(id -u)"
 	gid="$(id -g)"
 	if [ "$uid" = '0' ]; then
-		case "$1" in
+		case "${1-}" in
 			apache2*)
 				user="${APACHE_RUN_USER:-www-data}"
 				group="${APACHE_RUN_GROUP:-www-data}"
diff --git a/beta/php8.1/fpm/docker-entrypoint.sh b/beta/php8.1/fpm/docker-entrypoint.sh
index 95d3a6d977..dad730375c 100755
--- a/beta/php8.1/fpm/docker-entrypoint.sh
+++ b/beta/php8.1/fpm/docker-entrypoint.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
+if [[ "${1-}" == apache2* ]] || [ "${1-}" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
 	uid="$(id -u)"
 	gid="$(id -g)"
 	if [ "$uid" = '0' ]; then
-		case "$1" in
+		case "${1-}" in
 			apache2*)
 				user="${APACHE_RUN_USER:-www-data}"
 				group="${APACHE_RUN_GROUP:-www-data}"
diff --git a/beta/php8.2/apache/docker-entrypoint.sh b/beta/php8.2/apache/docker-entrypoint.sh
index 95d3a6d977..dad730375c 100755
--- a/beta/php8.2/apache/docker-entrypoint.sh
+++ b/beta/php8.2/apache/docker-entrypoint.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
+if [[ "${1-}" == apache2* ]] || [ "${1-}" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
 	uid="$(id -u)"
 	gid="$(id -g)"
 	if [ "$uid" = '0' ]; then
-		case "$1" in
+		case "${1-}" in
 			apache2*)
 				user="${APACHE_RUN_USER:-www-data}"
 				group="${APACHE_RUN_GROUP:-www-data}"
diff --git a/beta/php8.2/fpm-alpine/docker-entrypoint.sh b/beta/php8.2/fpm-alpine/docker-entrypoint.sh
index 95d3a6d977..dad730375c 100755
--- a/beta/php8.2/fpm-alpine/docker-entrypoint.sh
+++ b/beta/php8.2/fpm-alpine/docker-entrypoint.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
+if [[ "${1-}" == apache2* ]] || [ "${1-}" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
 	uid="$(id -u)"
 	gid="$(id -g)"
 	if [ "$uid" = '0' ]; then
-		case "$1" in
+		case "${1-}" in
 			apache2*)
 				user="${APACHE_RUN_USER:-www-data}"
 				group="${APACHE_RUN_GROUP:-www-data}"
diff --git a/beta/php8.2/fpm/docker-entrypoint.sh b/beta/php8.2/fpm/docker-entrypoint.sh
index 95d3a6d977..dad730375c 100755
--- a/beta/php8.2/fpm/docker-entrypoint.sh
+++ b/beta/php8.2/fpm/docker-entrypoint.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
+if [[ "${1-}" == apache2* ]] || [ "${1-}" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
 	uid="$(id -u)"
 	gid="$(id -g)"
 	if [ "$uid" = '0' ]; then
-		case "$1" in
+		case "${1-}" in
 			apache2*)
 				user="${APACHE_RUN_USER:-www-data}"
 				group="${APACHE_RUN_GROUP:-www-data}"
diff --git a/beta/php8.3/apache/docker-entrypoint.sh b/beta/php8.3/apache/docker-entrypoint.sh
index 95d3a6d977..dad730375c 100755
--- a/beta/php8.3/apache/docker-entrypoint.sh
+++ b/beta/php8.3/apache/docker-entrypoint.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
+if [[ "${1-}" == apache2* ]] || [ "${1-}" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
 	uid="$(id -u)"
 	gid="$(id -g)"
 	if [ "$uid" = '0' ]; then
-		case "$1" in
+		case "${1-}" in
 			apache2*)
 				user="${APACHE_RUN_USER:-www-data}"
 				group="${APACHE_RUN_GROUP:-www-data}"
diff --git a/beta/php8.3/fpm-alpine/docker-entrypoint.sh b/beta/php8.3/fpm-alpine/docker-entrypoint.sh
index 95d3a6d977..dad730375c 100755
--- a/beta/php8.3/fpm-alpine/docker-entrypoint.sh
+++ b/beta/php8.3/fpm-alpine/docker-entrypoint.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
+if [[ "${1-}" == apache2* ]] || [ "${1-}" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
 	uid="$(id -u)"
 	gid="$(id -g)"
 	if [ "$uid" = '0' ]; then
-		case "$1" in
+		case "${1-}" in
 			apache2*)
 				user="${APACHE_RUN_USER:-www-data}"
 				group="${APACHE_RUN_GROUP:-www-data}"
diff --git a/beta/php8.3/fpm/docker-entrypoint.sh b/beta/php8.3/fpm/docker-entrypoint.sh
index 95d3a6d977..dad730375c 100755
--- a/beta/php8.3/fpm/docker-entrypoint.sh
+++ b/beta/php8.3/fpm/docker-entrypoint.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
+if [[ "${1-}" == apache2* ]] || [ "${1-}" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
 	uid="$(id -u)"
 	gid="$(id -g)"
 	if [ "$uid" = '0' ]; then
-		case "$1" in
+		case "${1-}" in
 			apache2*)
 				user="${APACHE_RUN_USER:-www-data}"
 				group="${APACHE_RUN_GROUP:-www-data}"
diff --git a/beta/php8.4/apache/docker-entrypoint.sh b/beta/php8.4/apache/docker-entrypoint.sh
index 95d3a6d977..dad730375c 100755
--- a/beta/php8.4/apache/docker-entrypoint.sh
+++ b/beta/php8.4/apache/docker-entrypoint.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
+if [[ "${1-}" == apache2* ]] || [ "${1-}" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
 	uid="$(id -u)"
 	gid="$(id -g)"
 	if [ "$uid" = '0' ]; then
-		case "$1" in
+		case "${1-}" in
 			apache2*)
 				user="${APACHE_RUN_USER:-www-data}"
 				group="${APACHE_RUN_GROUP:-www-data}"
diff --git a/beta/php8.4/fpm-alpine/docker-entrypoint.sh b/beta/php8.4/fpm-alpine/docker-entrypoint.sh
index 95d3a6d977..dad730375c 100755
--- a/beta/php8.4/fpm-alpine/docker-entrypoint.sh
+++ b/beta/php8.4/fpm-alpine/docker-entrypoint.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
+if [[ "${1-}" == apache2* ]] || [ "${1-}" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
 	uid="$(id -u)"
 	gid="$(id -g)"
 	if [ "$uid" = '0' ]; then
-		case "$1" in
+		case "${1-}" in
 			apache2*)
 				user="${APACHE_RUN_USER:-www-data}"
 				group="${APACHE_RUN_GROUP:-www-data}"
diff --git a/beta/php8.4/fpm/docker-entrypoint.sh b/beta/php8.4/fpm/docker-entrypoint.sh
index 95d3a6d977..dad730375c 100755
--- a/beta/php8.4/fpm/docker-entrypoint.sh
+++ b/beta/php8.4/fpm/docker-entrypoint.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
+if [[ "${1-}" == apache2* ]] || [ "${1-}" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
 	uid="$(id -u)"
 	gid="$(id -g)"
 	if [ "$uid" = '0' ]; then
-		case "$1" in
+		case "${1-}" in
 			apache2*)
 				user="${APACHE_RUN_USER:-www-data}"
 				group="${APACHE_RUN_GROUP:-www-data}"
diff --git a/docker-entrypoint.sh b/docker-entrypoint.sh
index 95d3a6d977..dad730375c 100755
--- a/docker-entrypoint.sh
+++ b/docker-entrypoint.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
+if [[ "${1-}" == apache2* ]] || [ "${1-}" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
 	uid="$(id -u)"
 	gid="$(id -g)"
 	if [ "$uid" = '0' ]; then
-		case "$1" in
+		case "${1-}" in
 			apache2*)
 				user="${APACHE_RUN_USER:-www-data}"
 				group="${APACHE_RUN_GROUP:-www-data}"
diff --git a/latest/php8.1/apache/docker-entrypoint.sh b/latest/php8.1/apache/docker-entrypoint.sh
index 95d3a6d977..dad730375c 100755
--- a/latest/php8.1/apache/docker-entrypoint.sh
+++ b/latest/php8.1/apache/docker-entrypoint.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
+if [[ "${1-}" == apache2* ]] || [ "${1-}" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
 	uid="$(id -u)"
 	gid="$(id -g)"
 	if [ "$uid" = '0' ]; then
-		case "$1" in
+		case "${1-}" in
 			apache2*)
 				user="${APACHE_RUN_USER:-www-data}"
 				group="${APACHE_RUN_GROUP:-www-data}"
diff --git a/latest/php8.1/fpm-alpine/docker-entrypoint.sh b/latest/php8.1/fpm-alpine/docker-entrypoint.sh
index 95d3a6d977..dad730375c 100755
--- a/latest/php8.1/fpm-alpine/docker-entrypoint.sh
+++ b/latest/php8.1/fpm-alpine/docker-entrypoint.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
+if [[ "${1-}" == apache2* ]] || [ "${1-}" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
 	uid="$(id -u)"
 	gid="$(id -g)"
 	if [ "$uid" = '0' ]; then
-		case "$1" in
+		case "${1-}" in
 			apache2*)
 				user="${APACHE_RUN_USER:-www-data}"
 				group="${APACHE_RUN_GROUP:-www-data}"
diff --git a/latest/php8.1/fpm/docker-entrypoint.sh b/latest/php8.1/fpm/docker-entrypoint.sh
index 95d3a6d977..dad730375c 100755
--- a/latest/php8.1/fpm/docker-entrypoint.sh
+++ b/latest/php8.1/fpm/docker-entrypoint.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
+if [[ "${1-}" == apache2* ]] || [ "${1-}" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
 	uid="$(id -u)"
 	gid="$(id -g)"
 	if [ "$uid" = '0' ]; then
-		case "$1" in
+		case "${1-}" in
 			apache2*)
 				user="${APACHE_RUN_USER:-www-data}"
 				group="${APACHE_RUN_GROUP:-www-data}"
diff --git a/latest/php8.2/apache/docker-entrypoint.sh b/latest/php8.2/apache/docker-entrypoint.sh
index 95d3a6d977..dad730375c 100755
--- a/latest/php8.2/apache/docker-entrypoint.sh
+++ b/latest/php8.2/apache/docker-entrypoint.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
+if [[ "${1-}" == apache2* ]] || [ "${1-}" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
 	uid="$(id -u)"
 	gid="$(id -g)"
 	if [ "$uid" = '0' ]; then
-		case "$1" in
+		case "${1-}" in
 			apache2*)
 				user="${APACHE_RUN_USER:-www-data}"
 				group="${APACHE_RUN_GROUP:-www-data}"
diff --git a/latest/php8.2/fpm-alpine/docker-entrypoint.sh b/latest/php8.2/fpm-alpine/docker-entrypoint.sh
index 95d3a6d977..dad730375c 100755
--- a/latest/php8.2/fpm-alpine/docker-entrypoint.sh
+++ b/latest/php8.2/fpm-alpine/docker-entrypoint.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
+if [[ "${1-}" == apache2* ]] || [ "${1-}" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
 	uid="$(id -u)"
 	gid="$(id -g)"
 	if [ "$uid" = '0' ]; then
-		case "$1" in
+		case "${1-}" in
 			apache2*)
 				user="${APACHE_RUN_USER:-www-data}"
 				group="${APACHE_RUN_GROUP:-www-data}"
diff --git a/latest/php8.2/fpm/docker-entrypoint.sh b/latest/php8.2/fpm/docker-entrypoint.sh
index 95d3a6d977..dad730375c 100755
--- a/latest/php8.2/fpm/docker-entrypoint.sh
+++ b/latest/php8.2/fpm/docker-entrypoint.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
+if [[ "${1-}" == apache2* ]] || [ "${1-}" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
 	uid="$(id -u)"
 	gid="$(id -g)"
 	if [ "$uid" = '0' ]; then
-		case "$1" in
+		case "${1-}" in
 			apache2*)
 				user="${APACHE_RUN_USER:-www-data}"
 				group="${APACHE_RUN_GROUP:-www-data}"
diff --git a/latest/php8.3/apache/docker-entrypoint.sh b/latest/php8.3/apache/docker-entrypoint.sh
index 95d3a6d977..dad730375c 100755
--- a/latest/php8.3/apache/docker-entrypoint.sh
+++ b/latest/php8.3/apache/docker-entrypoint.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
+if [[ "${1-}" == apache2* ]] || [ "${1-}" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
 	uid="$(id -u)"
 	gid="$(id -g)"
 	if [ "$uid" = '0' ]; then
-		case "$1" in
+		case "${1-}" in
 			apache2*)
 				user="${APACHE_RUN_USER:-www-data}"
 				group="${APACHE_RUN_GROUP:-www-data}"
diff --git a/latest/php8.3/fpm-alpine/docker-entrypoint.sh b/latest/php8.3/fpm-alpine/docker-entrypoint.sh
index 95d3a6d977..dad730375c 100755
--- a/latest/php8.3/fpm-alpine/docker-entrypoint.sh
+++ b/latest/php8.3/fpm-alpine/docker-entrypoint.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
+if [[ "${1-}" == apache2* ]] || [ "${1-}" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
 	uid="$(id -u)"
 	gid="$(id -g)"
 	if [ "$uid" = '0' ]; then
-		case "$1" in
+		case "${1-}" in
 			apache2*)
 				user="${APACHE_RUN_USER:-www-data}"
 				group="${APACHE_RUN_GROUP:-www-data}"
diff --git a/latest/php8.3/fpm/docker-entrypoint.sh b/latest/php8.3/fpm/docker-entrypoint.sh
index 95d3a6d977..dad730375c 100755
--- a/latest/php8.3/fpm/docker-entrypoint.sh
+++ b/latest/php8.3/fpm/docker-entrypoint.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
+if [[ "${1-}" == apache2* ]] || [ "${1-}" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
 	uid="$(id -u)"
 	gid="$(id -g)"
 	if [ "$uid" = '0' ]; then
-		case "$1" in
+		case "${1-}" in
 			apache2*)
 				user="${APACHE_RUN_USER:-www-data}"
 				group="${APACHE_RUN_GROUP:-www-data}"
diff --git a/latest/php8.4/apache/docker-entrypoint.sh b/latest/php8.4/apache/docker-entrypoint.sh
index 95d3a6d977..dad730375c 100755
--- a/latest/php8.4/apache/docker-entrypoint.sh
+++ b/latest/php8.4/apache/docker-entrypoint.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
+if [[ "${1-}" == apache2* ]] || [ "${1-}" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
 	uid="$(id -u)"
 	gid="$(id -g)"
 	if [ "$uid" = '0' ]; then
-		case "$1" in
+		case "${1-}" in
 			apache2*)
 				user="${APACHE_RUN_USER:-www-data}"
 				group="${APACHE_RUN_GROUP:-www-data}"
diff --git a/latest/php8.4/fpm-alpine/docker-entrypoint.sh b/latest/php8.4/fpm-alpine/docker-entrypoint.sh
index 95d3a6d977..dad730375c 100755
--- a/latest/php8.4/fpm-alpine/docker-entrypoint.sh
+++ b/latest/php8.4/fpm-alpine/docker-entrypoint.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
+if [[ "${1-}" == apache2* ]] || [ "${1-}" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
 	uid="$(id -u)"
 	gid="$(id -g)"
 	if [ "$uid" = '0' ]; then
-		case "$1" in
+		case "${1-}" in
 			apache2*)
 				user="${APACHE_RUN_USER:-www-data}"
 				group="${APACHE_RUN_GROUP:-www-data}"
diff --git a/latest/php8.4/fpm/docker-entrypoint.sh b/latest/php8.4/fpm/docker-entrypoint.sh
index 95d3a6d977..dad730375c 100755
--- a/latest/php8.4/fpm/docker-entrypoint.sh
+++ b/latest/php8.4/fpm/docker-entrypoint.sh
@@ -1,11 +1,11 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-if [[ "$1" == apache2* ]] || [ "$1" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
+if [[ "${1-}" == apache2* ]] || [ "${1-}" = 'php-fpm' ] || { self="$(basename "$0")" && [ "$self" = 'docker-ensure-installed.sh' ]; }; then
 	uid="$(id -u)"
 	gid="$(id -g)"
 	if [ "$uid" = '0' ]; then
-		case "$1" in
+		case "${1-}" in
 			apache2*)
 				user="${APACHE_RUN_USER:-www-data}"
 				group="${APACHE_RUN_GROUP:-www-data}"