docker - 从 Dockerfile 构建并获取 "The following signatures couldn' t 被验证，因为公钥不可用 : NO_PUBKEY"

Question

我正在尝试使用启动的 Dockerfile 构建 PHP 5.3/Apache 以供本地使用:

FROM php:5.3-apache

RUN apt-get update && \
    apt-get install -y \
    libfreetype6-dev \
    libjpeg62-turbo-dev \
    libmcrypt-dev \
    libpng-dev

但是当“阅读包裹 list ”时，我得到:

W: GPG error: http://security.debian.org jessie/updates InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 9D6D8F6BC857C906 NO_PUBKEY AA8E81B4331F7F50
W: GPG error: http://http.debian.net jessie-updates InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 7638D0442B90D010
W: GPG error: http://http.debian.net jessie Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 7638D0442B90D010

看完 this page我尝试在第一行之后添加:

RUN apt-key adv --keyserver keyserver.ubuntu.com --recv-keys AA8E81B4331F7F50 && \
    apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 7638D0442B90D010

但是得到这个错误:

W: There is no public key available for the following key IDs:
9D6D8F6BC857C906
W: Failed to fetch http://http.debian.net/debian/dists/jessie/Release.gpg  Connection failed [IP: 130.89.148.77 80]

对 Ubuntu 与 Debian 几乎一无所知，我尝试了相同的方法，但使用了 keyring.debian.org代替 keyserver.ubuntu.com并得到:

gpgkeys: key AA8E81B4331F7F50 can't be retrieved
gpg: no valid OpenPGP data found.
gpg: Total number processed: 0

来自 another question我试过这个:

RUN apt-get update && \
    apt-get install -y --no-install-recommends \
    apt-transport-https \
    ca-certificates
RUN apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys AA8E81B4331F7F50
RUN apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 7638D0442B90D010

但得到与原来相同的 GPG 错误。
我现在很困惑如何进行。 (我知道 PHP 5.3 已经过时了，但很遗憾我无法改变它。)

Answer 1

来自 http://forums.debian.net/viewtopic.php?f=10&t=141778 ，一种解决方案是。

gpg --recv-keys AA8E81B4331F7F50
gpg --export AA8E81B4331F7F50| apt-key add -

Dockerfile 可能如下所示:

FROM php:5.3-apache

RUN for key in AA8E81B4331F7F50 7638D0442B90D010 9D6D8F6BC857C906; do \
        gpg --recv-keys "$key" \
        && gpg --export "$key" | apt-key add - ; \
    done

RUN apt-get update && \
    apt-get install -y \
        libfreetype6-dev \
        libjpeg62-turbo-dev \
        libmcrypt-dev \
        libpng-dev