complete backup policy for sync commnad

docker/sync/Dockerfile

@@ -55,6 +55,7 @@ ENV ALIYUNPAN_UPLOAD_BLOCK_SIZE=10240
 ENV ALIYUNPAN_LOCAL_DIR=/home/app/data
 ENV ALIYUNPAN_PAN_DIR=/sync_drive
 ENV ALIYUNPAN_SYNC_MODE=upload
+ENV ALIYUNPAN_SYNC_POLICY=increment
 ENV ALIYUNPAN_SYNC_DRIVE=backup
 ENV ALIYUNPAN_SYNC_PRIORITY=time
 ENV ALIYUNPAN_SYNC_LOG=false

docker/sync/app.sh

@@ -19,6 +19,7 @@ else
       "localFolderPath": "$ALIYUNPAN_LOCAL_DIR",
       "panFolderPath": "$ALIYUNPAN_PAN_DIR",
       "mode": "$ALIYUNPAN_SYNC_MODE",
+      "policy": "$ALIYUNPAN_SYNC_POLICY",
       "driveName": "$ALIYUNPAN_SYNC_DRIVE",
       "lastSyncTime": "2022-06-12 19:28:20"
      }

docker/sync/docker-compose.yml

@@ -29,6 +29,8 @@ services:
       - ALIYUNPAN_PAN_DIR=/my_sync_dir
       # 备份模式：upload(备份本地文件到云盘), download(备份云盘文件到本地)
       - ALIYUNPAN_SYNC_MODE=upload
+      # 备份策略: exclusive(排他备份文件，目标目录多余的文件会被删除),increment(增量备份文件，目标目录多余的文件不会被删除)
+      - ALIYUNPAN_SYNC_POLICY=increment
       # 网盘：backup(备份盘), resource(资源盘)
       - ALIYUNPAN_SYNC_DRIVE=backup
       # 是否显示文件备份过程日志，true-显示，false-不显示