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　　　　　　Docker使用经验

本文总结了Kaggle比赛常用的kaggle命令备查

使用经验

1. 在Ubuntu上安装Docker

Step 1. add the GPG key for the official Docker repository to the system

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -

Step 2. Add the Docker repository to APT sources

sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"

Step 3. update the package database with the Docker packages from the newly added repo

sudo apt-get update

Step 4. Make sure you are about to install from the Docker repo instead of the default Ubuntu 16.04 repo

apt-cache policy docker-ce

Step 5. You should see output similar to the following:

docker-ce:
  Installed: (none)
  Candidate: 17.03.1~ce-0~ubuntu-xenial
  Version table:
     17.03.1~ce-0~ubuntu-xenial 500
        500 https://download.docker.com/linux/ubuntu xenial/stable amd64 Packages
     17.03.0~ce-0~ubuntu-xenial 500
        500 https://download.docker.com/linux/ubuntu xenial/stable amd64 Packages

Step 6. install Docker

sudo apt-get install -y docker-ce

2. 安装Docker OpenCV Image

注意，docker image默认不支持X11转发，需要自己做映射

Step 1. 下载/更新Docker image

docker pull spmallick/opencv-docker:opencv

Step 2. 跑起来

docker run --device=/dev/video0:/dev/video0 -v /tmp/.X11-unix:/tmp/.X11-unix -e DISPLAY=$DISPLAY -p 5000:5000 -p 8888:8888 -it spmallick/opencv-docker:opencv /bin/bash

关于上面命令一些选项的注释：

  • –device=/dev/video0:/dev/video0 allows use of webcam
  • -v /tmp/.X11-unix:/tmp/.X11-unix helps in X11 forwarding so that we can use functions like cv::imshow.
  • -e is used to pass an environment variable.
  • -it starts an interactive session
  • -p sets up a port forward. This flag maps the container’s port to a port on the host system.
  • /bin/bash runs .bashrc file on startup

3. 提交对Docker Image的修改

默认在Docker容器内的修改是不会保存在Docker image里面的，需要自己如下图所示Commit一下：

4.

参考资料

Install OpenCV Docker Image on Ubuntu, MacOS or Windows