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我在 docker.com 上有一个公共 docker 容器，我试图让 Watchtower 在容器更新时自动拉取，但没有成功。这在几个月前有效，但现在不是。我使用 docker-compose 创建了瞭望塔容器（我之前使用的是默认启动命令，没有令牌，它正在工作）。

让我感到困惑的一点是，由于这是一个公共容器，我认为我不需要任何身份验证来拉取它。

这是瞭望塔的 docker 日志，显示 401 身份验证错误。

time="2021-11-29T15:26:06Z" level=debug msg="No new images found for /documents_watchtower_1"
time="2021-11-29T15:26:06Z" level=debug msg="Trying to load authentication credentials." container=/web image="pkellner/svccps1:3.0.63"
time="2021-11-29T15:26:06Z" level=debug msg="No credentials for pkellner found" config_file=/config.json
time="2021-11-29T15:26:06Z" level=debug msg="Got image name: pkellner/svccps1:3.0.63"
time="2021-11-29T15:26:06Z" level=debug msg="Checking if pull is needed" container=/web image="pkellner/svccps1:3.0.63"
time="2021-11-29T15:26:06Z" level=debug msg="Building challenge URL" URL="https://index.docker.io/v2/"
time="2021-11-29T15:26:06Z" level=debug msg="Got response to challenge request" header="Bearer realm=\"https://auth.docker.io/token\",service=\"registry.docker.io\"" status="401 Unauthorized"
time="2021-11-29T15:26:06Z" level=debug msg="Checking challenge header content" realm="https://auth.docker.io/token" service=registry.docker.io
time="2021-11-29T15:26:06Z" level=debug msg="Setting scope for auth token" image=pkellner/svccps1 scope="repository:pkellner/svccps1:pull"
time="2021-11-29T15:26:06Z" level=debug msg="No credentials found."
time="2021-11-29T15:26:07Z" level=debug msg="Parsing image ref" host=index.docker.io image=pkellner/svccps1 normalized="docker.io/pkellner/svccps1:3.0.63" tag=3.0.63
time="2021-11-29T15:26:07Z" level=debug msg="Doing a HEAD request to fetch a digest" url="https://index.docker.io/v2/pkellner/svccps1/manifests/3.0.63"
time="2021-11-29T15:26:07Z" level=debug msg="Found a remote digest to compare with" remote="sha256:xxx"
time="2021-11-29T15:26:07Z" level=debug msg=Comparing local="sha256:xxx" remote="sha256:xxx"
time="2021-11-29T15:26:07Z" level=debug msg="Found a match"
time="2021-11-29T15:26:07Z" level=debug msg="No pull needed. Skipping image."
time="2021-11-29T15:26:07Z" level=debug msg="No new images found for /web"

我的码头工人撰写文件：

services:
    watchtower:
      image: containrrr/watchtower
      restart: always
      volumes:
        - /var/run/docker.sock:/var/run/docker.sock
        - /etc/timezone:/etc/timezone:ro
      environment:
        - WATCHTOWER_CLEANUP=true
        - WATCHTOWER_LABEL_ENABLE=true
        - WATCHTOWER_INCLUDE_RESTARTING=true
        - WATCHTOWER_HTTP_API_TOKEN=xxxxxxx{from docker.com token}
        - WATCHTOWER_DEBUG=true
        - WATCHTOWER_POLL_INTERVAL=60
        
      labels:
        - "com.centurylinklabs.watchtower.enable=true"
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