fix: allow MINIO_ENDPOINT to be configured via environment variable

Previously MINIO_ENDPOINT was hardcoded to minio:9000 in docker-compose.yml,
preventing users from connecting to an external MinIO service. Now it supports
override via .env while keeping the same default for backward compatibility.

.env.example

@@ -157,6 +157,9 @@ CONCURRENCY_POOL_SIZE=5
 # QDRANT_USE_TLS=false
 
 # 如果使用MinIO作为文件存储，需要配置以下参数
+# MinIO访问端点（host:port），连接外部MinIO时需修改
+# MINIO_ENDPOINT=minio:9000
+
 # MinIO访问密钥
 # MINIO_ACCESS_KEY_ID=your_minio_access_key
 

docker-compose.yml

@@ -95,7 +95,7 @@ services:
       - STORAGE_TYPE=${STORAGE_TYPE:-}
       - LOCAL_STORAGE_BASE_DIR=${LOCAL_STORAGE_BASE_DIR:-}
       - AUTO_RECOVER_DIRTY=${AUTO_RECOVER_DIRTY:-true}
-      - MINIO_ENDPOINT=minio:9000
+      - MINIO_ENDPOINT=${MINIO_ENDPOINT:-minio:9000}
       - MINIO_ACCESS_KEY_ID=${MINIO_ACCESS_KEY_ID:-minioadmin}
       - MINIO_SECRET_ACCESS_KEY=${MINIO_SECRET_ACCESS_KEY:-minioadmin}
       - MINIO_BUCKET_NAME=${MINIO_BUCKET_NAME:-}