diff --git a/templates/deployment.yaml b/templates/deployment.yaml
index c475aa0..336f6a9 100644
--- a/templates/deployment.yaml
+++ b/templates/deployment.yaml
@@ -77,12 +77,21 @@ define('SECURE_AUTH_SALT', getenv('WP_SECURE_AUTH_SALT'));
 define('LOGGED_IN_SALT',   getenv('WP_LOGGED_IN_SALT'));
 define('NONCE_SALT',       getenv('WP_NONCE_SALT'));
 
-// ** WordPress Site URLs ** //
+// ** WordPress Site URLs - Dynamic based on HTTP_HOST ** //
 if ( defined( 'WP_CLI' ) ) {
 	$_SERVER['HTTP_HOST'] = '127.0.0.1';
 }
-define( 'WP_HOME', 'https://' . $_SERVER['HTTP_HOST'] . '/' );
-define( 'WP_SITEURL', 'https://' . $_SERVER['HTTP_HOST'] . '/' );
+
+// Determine protocol (HTTP or HTTPS)
+$protocol = 'http';
+if ( isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] === 'https' ) {
+	$protocol = 'https';
+} elseif ( isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' ) {
+	$protocol = 'https';
+}
+
+define( 'WP_HOME', $protocol . '://' . $_SERVER['HTTP_HOST'] . '/' );
+define( 'WP_SITEURL', $protocol . '://' . $_SERVER['HTTP_HOST'] . '/' );
 
 // ** WordPress Core Updates ** //
 define( 'WP_AUTO_UPDATE_CORE', false );
@@ -143,10 +152,13 @@ WPCONFIG
                   echo "$WP_ADMIN_PASSWORD" > /var/www/html-persistent/.initial-admin-password
                 fi
                 
+                # 初回インストール用の一時的なURL（後で動的に変更される）
+                INSTALL_URL="http://127.0.0.1"
+                
                 # WordPressのインストール
                 echo "Installing WordPress..."
                 /tmp/wp-cli.phar --path=/var/www/html core install \
-                  --url="$WP_SITE_URL" \
+                  --url="$INSTALL_URL" \
                   --title="$WP_SITE_TITLE" \
                   --admin_user="$WP_ADMIN_USER" \
                   --admin_password="$WP_ADMIN_PASSWORD" \
@@ -158,6 +170,7 @@ WPCONFIG
                 if [ -f /var/www/html-persistent/.initial-admin-password ]; then
                   echo "Admin Password: $(cat /var/www/html-persistent/.initial-admin-password)"
                 fi
+                echo "Note: Site URL is dynamic and will be set based on HTTP_HOST"
               else
                 echo "WordPress is already installed, skipping installation"
                 
@@ -198,8 +211,6 @@ WPCONFIG
                   key: db-password
             - name: WORDPRESS_TABLE_PREFIX
               value: {{ .Values.wordpress.tablePrefix | quote }}
-            - name: WP_SITE_URL
-              value: {{ .Values.wordpress.siteUrl | quote }}
             - name: WP_SITE_TITLE
               value: {{ .Values.wordpress.siteTitle | quote }}
             - name: WP_ADMIN_USER