Ubuntu Dockerfile执行apt-get update时出现403 Forbidden错误求助

我是Docker新手，当前在WSL2 Ubuntu 20.04与Docker Desktop环境中测试容器内ping google.com。构建Ubuntu:20.04镜像时，RUN apt-get update步骤失败，报错：
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/jammy/InRelease 403 Forbidden [IP: 91.189.91.39 80]

另外，构建Alpine:latest镜像执行RUN apk update正常，WSL2内直接执行apt-get update也没问题。

已尝试的解决方案 #

• 修改/etc/docker/daemon.json中的DNS配置
• 修改/etc/apt/source.lists中的协议（http改ftp/https）
• 安装apt-transport-https
• 更新适配本地区域的apt镜像源
• 将WSL2发行版升级至22.04 jammy
• 删除/var/lib/apt/lists/下所有文件后执行apt-get update
• 重新安装Docker Desktop

相关文件内容 #

Dockerfile #

#pull base image
FROM ubuntu:20.04

#sudo su
USER root

#update and clean packages
RUN : \
    && apt-get update \
    && rm -rf /var/cache/apk/* \
    && apt-get clean \
    && :

#copy all files in current directory into container directory /home/app
COPY . /home/app

#set /home/app as working directory
WORKDIR /home/app

#execute ping.sh
ENTRYPOINT ["sh", "ping.sh"]

ping.sh #

#!/bin/bash

ping google.com

/etc/docker/daemon.json #

{
    "dns": ["192.168.224.1", "8.8.8.8"]
}

/etc/resolv.conf #

# This file was automatically generated by WSL. To stop automatic generation of this file, add the following entry to /etc/wsl.conf:
# [network]
# generateResolvConf = false
nameserver 172.30.176.1

构建错误日志 #

执行docker build -t test-ping-ubuntu:0.1 .后的错误输出：

[+] Building 52.1s (7/9)
 => [internal] load build definition from Dockerfile                                             0.0s
 => => transferring dockerfile: 442B                                                             0.0s
 => [internal] load .dockerignore                                                                0.0s
 => => transferring context: 2B                                                                  0.0s
 => [internal] load metadata for docker.io/library/ubuntu:20.04                                 45.6s
 => [auth] library/ubuntu:pull token for registry-1.docker.io                                    0.0s
 => [1/4] FROM docker.io/library/ubuntu:20.04@sha256:0e0402cd13f68137edb0266e1d2c682f217814420f  5.1s
 => => resolve docker.io/library/ubuntu:20.04@sha256:0e0402cd13f68137edb0266e1d2c682f217814420f  0.0s
 => => sha256:0e0402cd13f68137edb0266e1d2c682f217814420f2d43d300ed8f65479b14fb 1.42kB / 1.42kB   0.0s
 => => sha256:8eb87f3d6c9f2feee114ff0eff93ea9dfd20b294df0a0353bd6a4abf403336fe 529B / 529B       0.0s
 => => sha256:d5447fc01ae62c20beffbfa50bc51b2797f9d7ebae031b8c2245b5be8ff1c75b 1.46kB / 1.46kB   0.0s
 => => sha256:846c0b181fff0c667d9444f8378e8fcfa13116da8d308bf21673f7e4bea8d58 28.58MB / 28.58MB  4.0s
 => => extracting sha256:846c0b181fff0c667d9444f8378e8fcfa13116da8d308bf21673f7e4bea8d580        0.9s
 => [internal] load build context                                                                0.0s
 => => transferring context: 500B                                                                0.0s
 => ERROR [2/4] RUN :     && apt-get update     && rm -rf /var/cache/apk/*     && apt-get clean  1.3s
------
 > [2/4] RUN :     && apt-get update     && rm -rf /var/cache/apk/*     && apt-get clean     && ::
#6 0.405 Err:1 http://security.ubuntu.com/ubuntu focal-security InRelease
#6 0.405   403  Forbidden [IP: 185.125.190.39 80]
#6 0.623 Err:2 http://archive.ubuntu.com/ubuntu focal InRelease
#6 0.623   403  Forbidden [IP: 185.125.190.36 80]
#6 0.631 Err:3 http://archive.ubuntu.com/ubuntu focal-updates InRelease
#6 0.631   403  Forbidden [IP: 185.125.190.36 80]
#6 0.639 Err:4 http://archive.ubuntu.com/ubuntu focal-backports InRelease
#6 0.639   403  Forbidden [IP: 185.125.190.36 80]
#6 0.642 Reading package lists...
#6 0.648 E: The repository 'http://security.ubuntu.com/ubuntu focal-security InRelease' is not signed.
#6 0.648 E: Failed to fetch http://security.ubuntu.com/ubuntu/dists/focal-security/InRelease  403  Forbidden [IP: 185.125.190.39 80]
#6 0.648 E: The repository 'http://archive.ubuntu.com/ubuntu focal InRelease' is not signed.
#6 0.648 E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/focal/InRelease  403  Forbidden [IP: 185.125.190.36 80]
#6 0.648 E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/focal-updates/InRelease  403  Forbidden [IP: 185.125.190.36 80]
#6 0.648 E: The repository 'http://archive.ubuntu.com/ubuntu focal-updates InRelease' is not signed.
#6 0.648 E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/focal-backports/InRelease  403  Forbidden [IP: 185.125.190.36 80]
#6 0.648 E: The repository 'http://archive.ubuntu.com/ubuntu focal-backports InRelease' is not signed.
------
executor failed running [/bin/sh -c :     && apt-get update     && rm -rf /var/cache/apk/*     && apt-get clean     && :]: exit code: 100

内容的提问来源于stack exchange，提问作者Harith Azwar