Docker-getting-started

Get started tutorial

啥是docker

• is a runnable instance of an image. You can create, start, stop, move, or delete a container using the DockerAPI or CLI（命令行界面）.
• can be run on local machines, virtual machines or deployed to the cloud.
• is portable (can be run on any OS)
• Containers are isolated from each other and run their own software, binaries, and configurations.

1 The example of “Build the app’s container image”

1.1 Get app and Create a Dockerfile

1.1.1 Download the App contents

1.1.2 Create a file named Dockerfile in the same folder as the file package.json with the following contents.

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# syntax=docker/dockerfile:1
FROM node:12-alpine
RUN apk add --no-cache python2 g++ make
WORKDIR /app
COPY . .
RUN yarn install --production
CMD ["node", "src/index.js"]

1.2 Build the container image

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 docker build -t getting-started .

• The -t flag tags our image. Named image geting-started
• The . means that Docker should look for the Dockerfile in the current directory

1.3 Start an app container

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 docker run -dp 8080:3000 getting-started

• -d - run the container in detached mode (in the background)
• -p 8080:3000 - map port 8080 of the host to port 3000 in the container
• docker/getting-started - the image to use

1.4 use use 吧

Add some items

If you take a quick look at the Docker Dashboard, you should see your two containers running now (this tutorial and your freshly launched app container).

2 Update the application

直接改，删了原来的image，再创建

Remove a container using the CLI

1. Get the ID of the container by using the docker ps command.

   1	$ docker ps

2. Use the docker stop command to stop the container.

   1 2	# Swap out <the-container-id> with the ID from docker ps $ docker stop <the-container-id>

3. Once the container has stopped, you can remove it by using the docker rm command.

   1	$ docker rm <the-container-id>

Note

You can stop and remove a container in a single command by adding the “force” flag to the docker rm command. For example: docker rm -f <the-container-id>

3 Push the image

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docker tag getting-started hair2020/getting-started
docker push hair2020/getting-started

记录下文档的反人类缩写

来自Sample application | Docker Documentation

• MVP (minimum viable product 最小可行产品)
• CLI（command-line interface命令行界面）
• hub (是吧)

安装问题

• win10 已开启hyper-v所有服务

  打开报错：

  System.InvalidOperationExceptionshell

  Failed to set version to docker-desktop: exit code: -1windows

  解决：

  Windows 10 Docker InvalidOperationException Failed to set version to docker-desktop: exit code: -1 - 尚码园 (shangmayuan.com)

  临时方案：cmd/shell下执行：netsh winsock reset

  重启docker

  永久方案：在网站消失的时间里，用上了win10企业版，完美运行。