我使用curl得到以下错误:
curl: (77) error setting certificate verify locations: CAfile: /etc/ssl/certs/ca-certificates.crt CApath: none
如何设置此证书验证位置?谢谢.
我在公司网络上构建Docker映像时遇到问题.我刚刚开始使用Docker,所以我有一个hello-world类型应用程序的以下Dockerfile:
# DOCKER-VERSION 0.3.4
FROM centos:6.4
# Enable EPEL for Node.js
RUN rpm -Uvh http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
# Install Node.js and npm
RUN yum install -y npm
# Bundle app source
ADD . /src
# Install app dependencies
RUN cd /src; npm install
EXPOSE 8080
CMD ["node", "/src/index.js"]
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当我在家里的笔记本电脑上,在我自己的无线网络上构建它时,这很好用.它可以下拉必需的依赖项并正确构建映像.
但是,当我在公司网络上工作时,尝试从download.fedoraproject.org下载RPM时,同样的docker构建失败,并显示以下错误消息:
第2步:运行rpm -Uvh http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm --->在e0c26afe9ed5卷曲中运行:(5)无法'解析代理'some.proxy.address'错误:跳过http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm - 转移失败
在我的公司网络上,我可以通过笔记本电脑轻松访问该URL.但是一旦Docker尝试构建容器,突然间它根本无法解决.对于各种外部资源(apt-get等),这种行为是相同的:它们都可以在公司网络上的笔记本电脑上解决得很好,但Docker无法解决它们.
我没有网络专业知识来弄清楚这里发生了什么.有谁知道为什么在构建Docker容器时会发生这种奇怪的行为?
我是Docker的初学者.我找不到任何关于此选项在docker run命令中做什么的明确描述,并且对它有点困惑.
我们可以使用它来访问在docker容器上运行的应用程序而无需指定端口吗?举个例子,如果我使用-p 8080:8080docker run命令中的选项运行通过端口8080中的docker镜像部署的webapp ,我知道我将不得不在Docker容器ip/theWebAppName上的8080端口上访问它.但我真的想不出--net=host选项如何运作的方式.
我想跑opam init,但出现错误:
(iit_synthesis) brandomiranda~ \xe2\x9d\xaf docker build -t brandojazz/pycoq:test_brando ~/pycoq/tutorial/\n[+] Building 1.5s (12/19) \n => [internal] load build definition from Dockerfile 0.0s\n => => transferring dockerfile: 2.33kB 0.0s\n => [internal] load .dockerignore 0.0s\n => => transferring context: 2B 0.0s\n => [internal] load metadata for docker.io/library/ubuntu:20.04 0.2s\n => CACHED https://api.github.com/repos/IBM/pycoq/git/refs/heads/main 0.0s\n => [ 1/15] FROM docker.io/library/ubuntu:20.04@sha256:fd92c36d3cb9b1d027c4d2a72c6bf0125da82425fc2ca37c414d4f010180dc19 0.0s\n => CACHED [ 2/15] RUN apt-get update && apt-get install -y --no-install-recommends ssh git m4 libgmp-dev opam wget ca-certificates rsync strace …Run Code Online (Sandbox Code Playgroud) 我正在尝试使用Docker在公司代理服务器后面设置开发环境.尽我所能,我无法让docker容器与代理服务器通信.
代理服务器和apt-get在主机上工作正常,即Ubuntu 12.04
在Dockerfile中完成的第一件事是尝试设置代理变量:
FROM ubuntu
RUN echo 'Acquire::http { Proxy "http://my.proxy.net:8000"; };' >> /etc/apt/apt.conf.d/01proxy
ENV HTTP_PROXY http://my.proxy.net:8000
ENV http_proxy http://my.proxy.net:8000
ENV HTTPS_PROXY https://my.proxy.net:8000
ENV https_proxy https://my.proxy.net:8000
RUN apt-get update && apt-get install -y build-essential
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它将图像拉得很好,设置了变量,但是当它进入apt-get update时,它会尝试一段时间然后失败并:
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/trusty/InRelease
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/trusty-updates/InRelease
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/trusty-security/InRelease
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/trusty/Release.gpg Could not resolve 'my.proxy.net'
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/trusty-updates/Release.gpg Could not resolve 'my.proxy.net'
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/trusty-security/Release.gpg Could not resolve 'my.proxy.net'
W: …Run Code Online (Sandbox Code Playgroud)