diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
index 0c10a4b..fc4048d 100644
--- a/Dockerfile.aarch64
+++ b/Dockerfile.aarch64
@@ -27,6 +27,7 @@ apk add --no-cache  \
     php7-mysqlnd \
     php7-tidy \
     php7-simplexml \
+    php7-ctype \
     tar && \
 
 echo "**** configure php-fpm to pass env vars ****" && \
diff --git a/Dockerfile.amd64 b/Dockerfile.amd64
index ffb128b..25acc24 100644
--- a/Dockerfile.amd64
+++ b/Dockerfile.amd64
@@ -24,6 +24,7 @@ apk add --no-cache  \
     php7-mysqlnd \
     php7-tidy \
     php7-simplexml \
+    php7-ctype \
     tar && \
 
 echo "**** configure php-fpm to pass env vars ****" && \
diff --git a/Dockerfile.armhf b/Dockerfile.armhf
index 682d031..ca43340 100644
--- a/Dockerfile.armhf
+++ b/Dockerfile.armhf
@@ -27,6 +27,7 @@ apk add --no-cache  \
     php7-mysqlnd \
     php7-tidy \
     php7-simplexml \
+    php7-ctype \
     tar && \
 
 echo "**** configure php-fpm to pass env vars ****" && \
diff --git a/root/etc/cont-init.d/50-config b/root/etc/cont-init.d/50-config
index 33f5fd8..801cf18 100644
--- a/root/etc/cont-init.d/50-config
+++ b/root/etc/cont-init.d/50-config
@@ -34,7 +34,7 @@ sed -i "s/DB_HOST=localhost/DB_HOST=${DB_HOST}/g" /var/www/html/.env
 
 sed -i "s/DB_DATABASE=database_database/DB_DATABASE=${DB_DATABASE}/g" /var/www/html/.env
 
-sed -i "s/DB_USERNAME=database_username/DB_USER=${DB_USER}/g" /var/www/html/.env
+sed -i "s/DB_USERNAME=database_username/DB_USERNAME=${DB_USER}/g" /var/www/html/.env
 
 sed -i "s/DB_PASSWORD=database_user_password/DB_PASSWORD=${DB_PASS}/g" /var/www/html/.env