Docker映像提取失败,未找到:清单

我在用 Docker version 20.10.8, build 3967b7d 在…上 CentOS-7.9 主持人和 Sonatype Nexus Repository Manager version - OSS 3.30.1-01 被用作私人docker注册表。当我试图用 docker-compose 它总是失败,错误如下。

$ docker-compose up -d
Pulling prometheus (internal-registry.com:8335/prometheus:latest)...
ERROR: manifest for internal-registry.com:8335/prometheus:latest not found: manifest unknown: manifest unknown

错误来自 Sonatype Nexus server log 如下。

2021-10-11 10:35:41,307+0530 WARN  [qtp657241891-125]  admin org.sonatype.nexus.repository.docker.internal.V2Handlers - Error: HEAD /v2/library/prometheus/manifests/latest: 401 - org.sonatype.nexus.repository.docker.internal.V2Exception: authentication required
2021-10-11 10:35:42,106+0530 WARN  [qtp657241891-560]  admin org.sonatype.nexus.repository.docker.internal.V2Handlers - Error: GET /v2/library/prometheus/manifests/latest: 401 - org.sonatype.nexus.repository.docker.internal.V2Exception: authentication required.

Docker主机 docker login to our private registry 成功了。

1) Repo - Allow clients to use the V1 API to interact with this repository (Tick mark enabled).
2) DockerHub(Proxy) - Allow clients to use the V1 API to interact with this repository (Tick mark enabled).
3) Group - Allow clients to use the V1 API to interact with this repository (Tick mark enabled).

4) Nexus UI > Security > Anonymous Access > Allow anonymous users to access the server - (Tick mark enabled).
Username: anonymous
Realm: Local Autherizing Realm

5) Nexus UI > Security > Role > Create role > Create Nexus role > Created new role
Privileges: nx-repository-view-*-*-*-broswe
            nx-repository-view-*-*-*-read
Roles: Contained - nx-anonymous

6) Nexus UI > Security > Users > anonymous(Active)
         Roles: Granted: read_and-browse

7) Nexus UI > Security > Realms - Docker Bearer Token Realm (Is in Active List) 

还在 not found: manifest unknown: manifest unknown 拉取docker映像时出错。我该如何解决这个问题?任何指针都会有帮助。谢谢