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Engine
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apt-cacher-ng
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Engine: Security
AppArmor security profiles for Docker (Engine)
Automation with content trust (Engine)
Content trust in Docker (Engine)
Delegations for content trust (Engine)
Deploying Notary (Engine)
Docker security (Engine)
Docker security non-events (Engine)
Isolate containers with a user namespace (Engine)
Manage keys for content trust (Engine)
Play in a content trust sandbox (Engine)
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Engine: Tutorials
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Get Started
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Migrate from Boot2Docker to Machine
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Notary
Client configuration (Notary)
Common Server and signer configurations (Notary)
Getting started with Notary
Notary changelog
Notary configuration files
Running a Notary service
Server configuration (Notary)
Signer configuration (Notary)
Understand the service architecture (Notary)
Use the Notary client
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注意：
如果您不喜欢 sudo，请参阅授予非 root 访问权限。
如果你通过 TCP 使用 macOS 或 docker，那么你不应该使用 sudo。
当你有多个 Docker 服务器，或者构建不能使用 Docker 构建缓存的不相关的 Docker 容器时，为你的包提供一个缓存代理会很有用。这个容器使得任何包的第二次下载几乎是即时的。
使用以下 Dockerfile：
# # Build: docker build -t apt-cacher .# Run: docker run -d -p 3142:3142 --name apt-cacher-run apt-cacher # # and then you can run containers with:# docker run -t -i --rm -e http_proxy http://dockerhost:3142/ debian bash # # Here, `dockerhost` is the IP address or FQDN of a host running the Docker daemon # which acts as an APT proxy server.FROM ubuntu VOLUME ["/var/cache/apt-cacher-ng"]RUN apt-get update && apt-get install -y apt-cacher-ng EXPOSE 3142CMD chmod 777 /var/cache/apt-cacher-ng && /etc/init.d/apt-cacher-ng start && tail -f /var/log/apt-cacher-ng/*
使用以下命令构建图像：
$ docker build -t eg_apt_cacher_ng .
然后运行它，将暴露的端口映射到主机上的端口
$ docker run -d -p 3142:3142 --name test_apt_cacher_ng eg_apt_cacher_ng
要查看tailed默认命令中的日志文件，可以使用：
$ docker logs -f test_apt_cacher_ng
要让您的基于 Debian 的容器使用代理，您有以下选项。请注意，您必须使用运行test_apt_cacher_ng容器的主机的 IP 地址或 FQDN 进行替换dockerhost。
1. 添加一个 apt 代理设置 echo 'Acquire::http { Proxy "http://dockerhost:3142"; };' >> /etc/apt/conf.d/01proxy
2. 设置环境变量：http_proxy=http://dockerhost:3142/
3. 改变你的sources.list条目从http://dockerhost:3142/开始
4. 使用--link将基于 Debian 的容器链接到 APT 代理容器
5. 使用基于 Debian 的容器创建 APT 代理容器的自定义网络。
选项1将设置安全地注入本地通用基础版本的 apt 配置中：
FROM ubuntu
RUN echo 'Acquire::http { Proxy "http://dockerhost:3142"; };' >> /etc/apt/apt.conf.d/01proxy
RUN apt-get update && apt-get install -y vim git
# docker build -t my_ubuntu .选项2是不错的测试，但会破坏其他 HTTP 客户端，其服从http_proxy，比如curl，wget和其他：
$ docker run --rm -t -i -e http_proxy=http://dockerhost:3142/ debian bash
选项3是最不便携的，但有时您可能需要这样做，并且您也可以从Dockerfile中选择。
选项4使用以下命令将 Debian 容器链接到代理服务器：
$ docker run -i -t --link test_apt_cacher_ng:apt_proxy -e http_proxy=http://apt_proxy:3142/ debian bash
选项5创建了一个 APT 代理服务器和基于 Debian 的容器的自定义网络：
$ docker network create mynetwork $ docker run -d -p 3142:3142 --network=mynetwork --name test_apt_cacher_ng eg_apt_cacher_ng $ docker run --rm -it --network=mynetwork -e http_proxy=http://test_apt_cacher_ng:3142/ debian bash
Apt-cacher-ng 有一些工具可以让您管理存储库，并且可以通过利用VOLUME指令和我们构建的用于运行服务的映像来使用它们：
$ docker run --rm -t -i --volumes-from test_apt_cacher_ng eg_apt_cacher_ng bash root@f38c87f2a42d:/# /usr/lib/apt-cacher-ng/distkill.pl Scanning /var/cache/apt-cacher-ng, please wait...Found distributions:bla, taggedcount: 0 1. precise-security (36 index files) 2. wheezy (25 index files) 3. precise-updates (36 index files) 4. precise (36 index files) 5. wheezy-updates (18 index files)Found architectures: 6. amd64 (36 index files) 7. i386 (24 index files)WARNING: The removal action may wipe out whole directories containing index files. Select d to see detailed list.(Number nn: tag distribution or architecture nn; 0: exit; d: show details; r: remove tagged; q: quit): q
最后，通过停止并取出容器，然后移除图像，在测试后清理。
$ docker stop test_apt_cacher_ng $ docker rm test_apt_cacher_ng $ docker rmi eg_apt_cacher_ng