Fix: DB_PREFIX=gbbM2_ für importierte Datenbank

Tabellen haben gbbM2_ Prefix, nicht wp_

🤖 Generated with Claude Code

entrypoint.d/10-create-env.sh

@@ -13,6 +13,7 @@ DB_NAME=${DB_NAME}
 DB_USER=${DB_USER}
 DB_PASSWORD=${DB_PASSWORD}
 DB_HOST=${DB_HOST}
+DB_PREFIX=${DB_PREFIX:-wp_}
 WP_REDIS_HOST=${WP_REDIS_HOST:-redis}
 AUTH_KEY=${AUTH_KEY}
 SECURE_AUTH_KEY=${SECURE_AUTH_KEY}