docker官方教程笔记

一、Getting Started

docker run -dp 80:80 docker/getting-started

• -d- run the container in detached mode (in the background)
• -p 80:80- map port 80 of the host to port 80 in the container
• docker/getting-started - the image to use

You can combine single character flags to shorten the full command. As an example, the command above could be written as:

docker run -dp 80:80 docker /getting-started

二、Our Application

1. Download the ZIP

2. Building the App’s Container Image

• Create a field named Dockerfile

FROM node:12-alpine
RUN apk add --no-cache python g++ make
WORKDIR /app
COPY . .
RUN yarn install --production
CMD ["node", "src/index.js"]

• docker build

docker build -t getting-restarted .

3. Starting an App Container

docker run -dp 3000:3000 getting-started

三、Updating our App

1. Updating our docker image

• update code
• update version of the image:docker build -t getting-started

2. Removing a container using the CLI

• Get the ID of the container

  docker ps