diff --git a/alpine-mariadb-aarch64/files/run.sh b/alpine-mariadb-aarch64/files/run.sh
index ca0382c..b44e941 100644
--- a/alpine-mariadb-aarch64/files/run.sh
+++ b/alpine-mariadb-aarch64/files/run.sh
@@ -12,35 +12,35 @@ read_secret() {
 
 # Set MYSQL_ variables based on MARIADB_ variables or secrets if MYSQL_ is not set
 for var in ROOT_PASSWORD DATABASE USER PASSWORD CHARSET COLLATION; do
-    mysql_var="MYSQL_${var}"
-    mariadb_var="MARIADB_${var}"
+    eval mysql_var="\$MYSQL_${var}"
+    eval mariadb_var="\$MARIADB_${var}"
     
     # Check environment variables
-    if [ -z "${!mysql_var}" ] && [ -n "${!mariadb_var}" ]; then
-        export "$mysql_var"="${!mariadb_var}"
+    if [ -z "$mysql_var" ] && [ -n "$mariadb_var" ]; then
+        eval "export MYSQL_${var}=\$mariadb_var"
     fi
     
     # Check secrets
-    mysql_secret="/run/secrets/mysql_${var,,}"
-    mariadb_secret="/run/secrets/mariadb_${var,,}"
+    mysql_secret="/run/secrets/mysql_$(echo $var | tr '[:upper:]' '[:lower:]')"
+    mariadb_secret="/run/secrets/mariadb_$(echo $var | tr '[:upper:]' '[:lower:]')"
     
-    if [ -z "${!mysql_var}" ] && [ -f "$mariadb_secret" ]; then
-        export "$mysql_var"=$(read_secret "$mariadb_secret")
-    elif [ -z "${!mysql_var}" ] && [ -f "$mysql_secret" ]; then
-        export "$mysql_var"=$(read_secret "$mysql_secret")
+    if [ -z "$mysql_var" ] && [ -f "$mariadb_secret" ]; then
+        eval "export MYSQL_${var}=$(read_secret "$mariadb_secret")"
+    elif [ -z "$mysql_var" ] && [ -f "$mysql_secret" ]; then
+        eval "export MYSQL_${var}=$(read_secret "$mysql_secret")"
     fi
 done
 
 # Handle *_FILE variables
 for var in ROOT_PASSWORD DATABASE USER PASSWORD; do
-    mysql_var="MYSQL_${var}"
-    mysql_file_var="MYSQL_${var}_FILE"
-    mariadb_file_var="MARIADB_${var}_FILE"
+    eval mysql_var="\$MYSQL_${var}"
+    eval mysql_file_var="\$MYSQL_${var}_FILE"
+    eval mariadb_file_var="\$MARIADB_${var}_FILE"
     
-    if [ -z "${!mysql_var}" ] && [ -n "${!mysql_file_var}" ]; then
-        export "$mysql_var"=$(read_secret "${!mysql_file_var}")
-    elif [ -z "${!mysql_var}" ] && [ -n "${!mariadb_file_var}" ]; then
-        export "$mysql_var"=$(read_secret "${!mariadb_file_var}")
+    if [ -z "$mysql_var" ] && [ -n "$mysql_file_var" ]; then
+        eval "export MYSQL_${var}=$(read_secret "$mysql_file_var")"
+    elif [ -z "$mysql_var" ] && [ -n "$mariadb_file_var" ]; then
+        eval "export MYSQL_${var}=$(read_secret "$mariadb_file_var")"
     fi
 done
 
diff --git a/alpine-mariadb-amd64/files/run.sh b/alpine-mariadb-amd64/files/run.sh
index ca0382c..b44e941 100644
--- a/alpine-mariadb-amd64/files/run.sh
+++ b/alpine-mariadb-amd64/files/run.sh
@@ -12,35 +12,35 @@ read_secret() {
 
 # Set MYSQL_ variables based on MARIADB_ variables or secrets if MYSQL_ is not set
 for var in ROOT_PASSWORD DATABASE USER PASSWORD CHARSET COLLATION; do
-    mysql_var="MYSQL_${var}"
-    mariadb_var="MARIADB_${var}"
+    eval mysql_var="\$MYSQL_${var}"
+    eval mariadb_var="\$MARIADB_${var}"
     
     # Check environment variables
-    if [ -z "${!mysql_var}" ] && [ -n "${!mariadb_var}" ]; then
-        export "$mysql_var"="${!mariadb_var}"
+    if [ -z "$mysql_var" ] && [ -n "$mariadb_var" ]; then
+        eval "export MYSQL_${var}=\$mariadb_var"
     fi
     
     # Check secrets
-    mysql_secret="/run/secrets/mysql_${var,,}"
-    mariadb_secret="/run/secrets/mariadb_${var,,}"
+    mysql_secret="/run/secrets/mysql_$(echo $var | tr '[:upper:]' '[:lower:]')"
+    mariadb_secret="/run/secrets/mariadb_$(echo $var | tr '[:upper:]' '[:lower:]')"
     
-    if [ -z "${!mysql_var}" ] && [ -f "$mariadb_secret" ]; then
-        export "$mysql_var"=$(read_secret "$mariadb_secret")
-    elif [ -z "${!mysql_var}" ] && [ -f "$mysql_secret" ]; then
-        export "$mysql_var"=$(read_secret "$mysql_secret")
+    if [ -z "$mysql_var" ] && [ -f "$mariadb_secret" ]; then
+        eval "export MYSQL_${var}=$(read_secret "$mariadb_secret")"
+    elif [ -z "$mysql_var" ] && [ -f "$mysql_secret" ]; then
+        eval "export MYSQL_${var}=$(read_secret "$mysql_secret")"
     fi
 done
 
 # Handle *_FILE variables
 for var in ROOT_PASSWORD DATABASE USER PASSWORD; do
-    mysql_var="MYSQL_${var}"
-    mysql_file_var="MYSQL_${var}_FILE"
-    mariadb_file_var="MARIADB_${var}_FILE"
+    eval mysql_var="\$MYSQL_${var}"
+    eval mysql_file_var="\$MYSQL_${var}_FILE"
+    eval mariadb_file_var="\$MARIADB_${var}_FILE"
     
-    if [ -z "${!mysql_var}" ] && [ -n "${!mysql_file_var}" ]; then
-        export "$mysql_var"=$(read_secret "${!mysql_file_var}")
-    elif [ -z "${!mysql_var}" ] && [ -n "${!mariadb_file_var}" ]; then
-        export "$mysql_var"=$(read_secret "${!mariadb_file_var}")
+    if [ -z "$mysql_var" ] && [ -n "$mysql_file_var" ]; then
+        eval "export MYSQL_${var}=$(read_secret "$mysql_file_var")"
+    elif [ -z "$mysql_var" ] && [ -n "$mariadb_file_var" ]; then
+        eval "export MYSQL_${var}=$(read_secret "$mariadb_file_var")"
     fi
 done
 
diff --git a/alpine-mariadb-armhf/files/run.sh b/alpine-mariadb-armhf/files/run.sh
index ca0382c..b44e941 100644
--- a/alpine-mariadb-armhf/files/run.sh
+++ b/alpine-mariadb-armhf/files/run.sh
@@ -12,35 +12,35 @@ read_secret() {
 
 # Set MYSQL_ variables based on MARIADB_ variables or secrets if MYSQL_ is not set
 for var in ROOT_PASSWORD DATABASE USER PASSWORD CHARSET COLLATION; do
-    mysql_var="MYSQL_${var}"
-    mariadb_var="MARIADB_${var}"
+    eval mysql_var="\$MYSQL_${var}"
+    eval mariadb_var="\$MARIADB_${var}"
     
     # Check environment variables
-    if [ -z "${!mysql_var}" ] && [ -n "${!mariadb_var}" ]; then
-        export "$mysql_var"="${!mariadb_var}"
+    if [ -z "$mysql_var" ] && [ -n "$mariadb_var" ]; then
+        eval "export MYSQL_${var}=\$mariadb_var"
     fi
     
     # Check secrets
-    mysql_secret="/run/secrets/mysql_${var,,}"
-    mariadb_secret="/run/secrets/mariadb_${var,,}"
+    mysql_secret="/run/secrets/mysql_$(echo $var | tr '[:upper:]' '[:lower:]')"
+    mariadb_secret="/run/secrets/mariadb_$(echo $var | tr '[:upper:]' '[:lower:]')"
     
-    if [ -z "${!mysql_var}" ] && [ -f "$mariadb_secret" ]; then
-        export "$mysql_var"=$(read_secret "$mariadb_secret")
-    elif [ -z "${!mysql_var}" ] && [ -f "$mysql_secret" ]; then
-        export "$mysql_var"=$(read_secret "$mysql_secret")
+    if [ -z "$mysql_var" ] && [ -f "$mariadb_secret" ]; then
+        eval "export MYSQL_${var}=$(read_secret "$mariadb_secret")"
+    elif [ -z "$mysql_var" ] && [ -f "$mysql_secret" ]; then
+        eval "export MYSQL_${var}=$(read_secret "$mysql_secret")"
     fi
 done
 
 # Handle *_FILE variables
 for var in ROOT_PASSWORD DATABASE USER PASSWORD; do
-    mysql_var="MYSQL_${var}"
-    mysql_file_var="MYSQL_${var}_FILE"
-    mariadb_file_var="MARIADB_${var}_FILE"
+    eval mysql_var="\$MYSQL_${var}"
+    eval mysql_file_var="\$MYSQL_${var}_FILE"
+    eval mariadb_file_var="\$MARIADB_${var}_FILE"
     
-    if [ -z "${!mysql_var}" ] && [ -n "${!mysql_file_var}" ]; then
-        export "$mysql_var"=$(read_secret "${!mysql_file_var}")
-    elif [ -z "${!mysql_var}" ] && [ -n "${!mariadb_file_var}" ]; then
-        export "$mysql_var"=$(read_secret "${!mariadb_file_var}")
+    if [ -z "$mysql_var" ] && [ -n "$mysql_file_var" ]; then
+        eval "export MYSQL_${var}=$(read_secret "$mysql_file_var")"
+    elif [ -z "$mysql_var" ] && [ -n "$mariadb_file_var" ]; then
+        eval "export MYSQL_${var}=$(read_secret "$mariadb_file_var")"
     fi
 done