docker.md

Docker is a set of platform as a service (PaaS) products that use OS-level virtualization to deliver software in packages called containers. Containers are isolated from one another and bundle their own software, libraries and configuration files; they can communicate with each other through well-defined channels. All containers are run by a single operating system kernel and therefore use fewer resources than virtual machines.

Learn

• Official docker docs
• Docker guide
• Docker Curriculum🐬 A comprehensive tutorial on getting started with Docker!
• Docker 入门教程
• Docker Cheat Sheet

[[kubernetes]]

• 10 分钟看懂 Docker 和 K8S

针对 GFW

• 使用 DaoCloud，选择自己的主机，安装好后就是从 DaoCloud 拉取 images 了。

制作尽可能小的镜像

• 选择最小的适合的 image 开始，比如 golang，就直接使用

    FROM golang:latest
  

• 尽可能压缩会生成文件的命令调用，因为每一个 Dockerfile 命令，都会建立一个版本镜像，所以尽量将 COPY ADD CMD RUN 等命令归到一行，比如

    RUN go install agent
    RUN rm -rf pkg src .godeps
  

  就要合并成一行

    RUN go install agent && rm -rf pkg src .godeps
  

• 使用 .dockerignore，这败家玩意儿，简直活脱脱就是个 .gitignore，语法姨妈一样，一般 build golang 会这么写

    COPY .godeps /go/.godeps
    COPY src /go/src
  

  相应的 .dockerignore 这么写

    .git
    pkg
    bin
    .godeps/pkg
    .godeps/bin
  

Tools

• DockerSlim (docker-slim): Don't change anything in your Docker container image and minify it by up to 30x (and for compiled languages even more) making it secure too! (free and open source) https://dockersl.im

Resources

• Awesome Docker🐳 A curated list of Docker resources and projects