diff --git a/CHANGELOG.md b/CHANGELOG.md
index 264f1c2..6e99a01 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # nystudio107/craft Change Log
 
+## 2.5.9 - 2022.05.02
+### Fixed
+* Clean up initial check for `composer.lock` or `vendor/autoload.php` to ensure the first-time install is done
+
+### Changed
+* Changed `bootstrap.php` to allow `.env`-set environment variables override existing injected environment variables ([#82](https://github.com/craftcms/craft/issues/82))
+
 ## 2.5.8 - 2022.04.13
 ### Fixed
 * Changed the hostname from `mysql` to `mariadb` in the `composer_install.sh` and `run_queue.sh` scripts, since we're using MariaDB
diff --git a/cms/bootstrap.php b/cms/bootstrap.php
index 2502887..d57d6da 100644
--- a/cms/bootstrap.php
+++ b/cms/bootstrap.php
@@ -12,7 +12,7 @@
 
 // Load dotenv?
 if (class_exists('Dotenv\Dotenv')) {
-    Dotenv\Dotenv::createUnsafeImmutable(CRAFT_BASE_PATH)->safeLoad();
+    Dotenv\Dotenv::createUnsafeMutable(CRAFT_BASE_PATH)->safeLoad();
 }
 
 // Define additional PHP constants
diff --git a/docker-config/php-prod-craft/composer_install.sh b/docker-config/php-prod-craft/composer_install.sh
index 0d6045c..2ebfa1f 100755
--- a/docker-config/php-prod-craft/composer_install.sh
+++ b/docker-config/php-prod-craft/composer_install.sh
@@ -13,9 +13,9 @@
 # Ensure permissions on directories Craft needs to write to
 chown -R www-data:www-data /var/www/project/cms/storage
 chown -R www-data:www-data /var/www/project/cms/web/cpresources
-# Check for `composer.lock` & `vendor/`
+# Check for `composer.lock` & `vendor/autoload.php`
 cd /var/www/project/cms
-if [ ! -f "composer.lock" ] || [ ! -d "vendor" ]; then
+if [ ! -f "composer.lock" ] || [ ! -f "vendor/autoload.php" ]; then
     su-exec www-data composer install --verbose --no-progress --no-scripts --optimize-autoloader --no-interaction
     # Wait until the MySQL db container responds
     echo "### Waiting for MySQL database"
diff --git a/docker-config/php-prod-craft/run_queue.sh b/docker-config/php-prod-craft/run_queue.sh
index 57eebf3..5318cdd 100755
--- a/docker-config/php-prod-craft/run_queue.sh
+++ b/docker-config/php-prod-craft/run_queue.sh
@@ -19,9 +19,9 @@ until eval "mysql -h mariadb -u $DB_USER -p$DB_PASSWORD $DB_DATABASE -e 'select
 do
   sleep 1
 done
-# Wait until the `composer install` is done by looking for the `vendor/autoload.php` file
+# Wait until the `composer install` is done by looking for the `vendor/autoload.php` and `composer.lock` files
 echo "### Waiting for vendor/autoload.php"
-while [ ! -f vendor/autoload.php ] || [ ! -f composer.lock ]
+while [ ! -f "vendor/autoload.php" ] || [ ! -f "composer.lock" ]
 do
   sleep 1
 done