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+FROM soyorins/imageflow
+
+ENV STORAGE_TYPE="local"
+ENV LOCAL_STORAGE_PATH="/app/static/images"
+ENV S3_ENDPOINT=""
+ENV S3_REGION=""
+ENV S3_ACCESS_KEY=""
+ENV S3_SECRET_KEY=""
+ENV S3_BUCKET=""
+ENV CUSTOM_DOMAIN=""
+ENV MAX_UPLOAD_COUNT="20"
+ENV IMAGE_QUALITY="80"
+ENV WORKER_THREADS="4"
+ENV COMPRESSION_EFFORT="6"
+ENV FORCE_LOSSLESS="false"
+
+# WebDAV备份配置
+ENV WEBDAV_URL=""
+ENV WEBDAV_USERNAME=""
+ENV WEBDAV_PASSWORD=""
+ENV WEBDAV_BACKUP_PATH=""
+ENV SYNC_INTERVAL="600"
+
+# 安装WebDAV备份所需依赖
+RUN apk add --no-cache python3 py3-pip curl tar shadow
+
+# 确保目录存在并授予合适的权限
+RUN mkdir -p /app/static/images/metadata \
+    /app/static/images/original/landscape \
+    /app/static/images/original/portrait \
+    /app/static/images/landscape/webp \
+    /app/static/images/landscape/avif \
+    /app/static/images/portrait/webp \
+    /app/static/images/portrait/avif \
+    /app/static/images/gif
+
+# 确保权限正确
+RUN chmod -R 777 /app/static/images && \
+    chown -R nobody:nobody /app/static/images
+
+RUN touch /app/.env && chmod 666 /app/.env
+
+ENV APP_DIR="/app"
+ENV APP_NAME="image"
+ENV APP_SUFFIX="flow"
+
+# 安装Python依赖
+RUN pip3 install --no-cache-dir requests webdavclient3 --break-system-packages
+
+# 复制同步脚本到容器中
+COPY sync_data.sh /app/
+RUN chmod +x /app/sync_data.sh
+
+# 创建专用用户运行应用
+RUN adduser -D -u 1000 appuser
+RUN chown -R appuser:appuser /app
+
+# 设置工作目录
+WORKDIR /app
+
+# 使用CMD指令启动应用
+CMD ["/bin/sh", "-c", "/app/sync_data.sh & sleep 30 && $APP_DIR/$APP_NAME$APP_SUFFIX"]

sync_data.sh

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+#!/bin/sh
+
+# 检查环境变量
+if [ -z "$WEBDAV_URL" ] || [ -z "$WEBDAV_USERNAME" ] || [ -z "$WEBDAV_PASSWORD" ]; then
+    echo "Starting without backup functionality - missing WEBDAV_URL, WEBDAV_USERNAME, or WEBDAV_PASSWORD"
+    exec $APP_DIR/$APP_NAME$APP_SUFFIX
+    exit 0
+fi
+
+# 设置备份路径
+WEBDAV_BACKUP_PATH=${WEBDAV_BACKUP_PATH:-""}
+FULL_WEBDAV_URL="${WEBDAV_URL}"
+if [ -n "$WEBDAV_BACKUP_PATH" ]; then
+    FULL_WEBDAV_URL="${WEBDAV_URL}/${WEBDAV_BACKUP_PATH}"
+fi
+
+# 下载最新备份并恢复
+restore_backup() {
+    echo "开始从 WebDAV 下载最新备份..."
+    python3 -c "
+import sys
+import os
+import tarfile
+import requests
+import shutil
+from webdav3.client import Client
+options = {
+    'webdav_hostname': '$FULL_WEBDAV_URL',
+    'webdav_login': '$WEBDAV_USERNAME',
+    'webdav_password': '$WEBDAV_PASSWORD'
+}
+client = Client(options)
+backups = [file for file in client.list() if file.endswith('.tar.gz') and file.startswith('imageflow_backup_')]
+if not backups:
+    print('没有找到备份文件')
+    sys.exit()
+latest_backup = sorted(backups)[-1]
+print(f'最新备份文件：{latest_backup}')
+with requests.get(f'$FULL_WEBDAV_URL/{latest_backup}', auth=('$WEBDAV_USERNAME', '$WEBDAV_PASSWORD'), stream=True) as r:
+    if r.status_code == 200:
+        with open(f'/tmp/{latest_backup}', 'wb') as f:
+            for chunk in r.iter_content(chunk_size=8192):
+                f.write(chunk)
+        print(f'成功下载备份文件到 /tmp/{latest_backup}')
+        if os.path.exists(f'/tmp/{latest_backup}'):
+            # 如果images目录已存在，先尝试安全删除它
+            if os.path.exists('/app/static/images'):
+                print('尝试删除现有的images目录')
+                try:
+                    # 首先尝试添加写权限
+                    for root, dirs, files in os.walk('/app/static/images'):
+                        os.chmod(root, 0o777)
+                        for f in files:
+                            os.chmod(os.path.join(root, f), 0o666)
+                    # 然后尝试删除
+                    shutil.rmtree('/app/static/images')
+                    print('成功删除images目录')
+                except Exception as e:
+                    print(f'删除目录时出错: {e}')
+                    print('尝试使用系统命令删除')
+                    # 如果Python无法删除，尝试使用系统命令
+                    os.system('chmod -R 777 /app/static/images')
+                    os.system('rm -rf /app/static/images')
+                    # 验证是否删除成功
+                    if not os.path.exists('/app/static/images'):
+                        print('使用系统命令成功删除images目录')
+                    else:
+                        print('警告：无法删除现有目录，将尝试继续恢复')
+            
+            # 创建新的images目录（如果不存在）
+            os.makedirs('/app/static/images', exist_ok=True)
+            os.chmod('/app/static/images', 0o777)
+            
+            # 解压备份文件
+            with tarfile.open(f'/tmp/{latest_backup}', 'r:gz') as tar:
+                tar.extractall('/app/')
+            
+            # 确保恢复后的目录有正确的权限
+            for root, dirs, files in os.walk('/app/static/images'):
+                os.chmod(root, 0o777)
+                for f in files:
+                    os.chmod(os.path.join(root, f), 0o666)
+            
+            print(f'成功从 {latest_backup} 恢复备份')
+        else:
+            print('下载的备份文件不存在')
+    else:
+        print(f'下载备份失败：{r.status_code}')
+"
+}
+
+# 首次启动时下载最新备份
+echo "Downloading latest backup from WebDAV..."
+restore_backup
+
+# 同步函数
+sync_data() {
+    while true; do
+        echo "Starting sync process at $(date)"
+
+        if [ -d "/app/static/images" ]; then
+            timestamp=$(date +%Y%m%d_%H%M%S)
+            backup_file="imageflow_backup_${timestamp}.tar.gz"
+
+            # 备份整个images目录
+            cd /app
+            tar -czf "/tmp/${backup_file}" static/images
+
+            # 上传新备份到WebDAV
+            curl -u "$WEBDAV_USERNAME:$WEBDAV_PASSWORD" -T "/tmp/${backup_file}" "$FULL_WEBDAV_URL/${backup_file}"
+            if [ $? -eq 0 ]; then
+                echo "Successfully uploaded ${backup_file} to WebDAV"
+            else
+                echo "Failed to upload ${backup_file} to WebDAV"
+            fi
+
+            # 清理旧备份文件
+            python3 -c "
+import sys
+from webdav3.client import Client
+options = {
+    'webdav_hostname': '$FULL_WEBDAV_URL',
+    'webdav_login': '$WEBDAV_USERNAME',
+    'webdav_password': '$WEBDAV_PASSWORD'
+}
+client = Client(options)
+backups = [file for file in client.list() if file.endswith('.tar.gz') and file.startswith('imageflow_backup_')]
+backups.sort()
+if len(backups) > 5:
+    to_delete = len(backups) - 5
+    for file in backups[:to_delete]:
+        client.clean(file)
+        print(f'Successfully deleted {file}.')
+else:
+    print('Only {} backups found, no need to clean.'.format(len(backups)))
+" 2>&1
+
+            rm -f "/tmp/${backup_file}"
+        else
+            echo "/app/static/images directory does not exist, waiting for next sync..."
+        fi
+
+        SYNC_INTERVAL=${SYNC_INTERVAL:-600}
+        echo "Next sync in ${SYNC_INTERVAL} seconds..."
+        sleep $SYNC_INTERVAL
+    done
+}
+
+# 启动同步进程
+sync_data &
+
+# 启动主应用
+sleep 30
+exec $APP_DIR/$APP_NAME$APP_SUFFIX