#Docker 入门

wget -qO- get.docker.com | bash

apt purge docker-ce docker-ce-cli containerd.io
rm -rf /var/lib/docker
rm -rf /var/lib/containerd

sudo curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

sudo chmod +x /usr/local/bin/docker-compose

curl -sSL https://get.daocloud.io/docker | sh

curl -L https://get.daocloud.io/docker/compose/releases/download/v2.1.1/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose
chmod +x /usr/local/bin/docker-compose

sudo apt-get remove docker docker-engine
rm -fr /var/lib/docker/

docker run -dp 80:80 -v my-volume:/var/www/html nginx
# 容器启动时，将数据卷挂载到容器指定的路径： /var/www/html
# 容器运行时产生的任何数据都会写入这个路径中
# 使用 -v 参数的时候甚至不需要提前使用命令创建 volume，系统会自动挂载

docker run -idt -v /data/docker_volume/html:/root/html nginx

docker run -itd -v /root/html nginx   #这会创建一个匿名的 volume

FROM node:14-alpine AS build
# 选择一个基础镜像，附加版本号
WORKDIR /opt/node_app
# 指定之后所有的docker命令的工作路径（如果不存在docker会自动创建该路径）
COPY package.json yarn.lock ./
RUN yarn --ignore-optional

ARG NODE_ENV=production

COPY . .
# 使用copy命令将当前文件夹下的所有内容拷贝到Docker镜像中
# 第一个参数：本地文件 '.' 代表程序根目录下的所有文件
# 第二个参数代表Docker镜像中的路径，此时的 '.' 代表当前的工作路径，即使之前设置的工作路径
RUN yarn build:app:docker
# 使用包管理工具进行打包
FROM nginx:1.21-alpine

COPY --from=build /opt/node_app/build /usr/share/nginx/html

HEALTHCHECK CMD wget -q -O /dev/null http://localhost || exit 1

docker build -t my-app .
# `-t` : tag指定了创建镜像的名字  '.' 代表在当前目录下构建

docker compose up -d
# d(detach) 代表在后台运行所有的容器

docker compose down
# 停止并删除所有的容器

# 目录结构
root@Mr-j:/mnt/c/Users/30328/Desktop/docker_study
.
├── Dockerfile
└── helloworld.js

FROM node:slim
# 基础镜像
WORKDIR /app
# 容器内切换到指定路径
COPY . .
# 拷贝当前文件夹下的文件到容器中的目录
CMD ["node", "/app/helloworld.js"]
# 打包完成后执行的命令

❯ docker build -t test .
[+] Building 2.4s (8/8) FINISHED
 => [internal] load build definition from Dockerfile                                           0.3s
 => => transferring dockerfile: 117B                                                           0.0s
 => [internal] load .dockerignore                                                              0.4s
 => => transferring context: 2B                                                                0.0s
 => [internal] load metadata for docker.io/library/node:slim                                   0.0s
 => [1/3] FROM docker.io/library/node:slim                                                     0.0s
 => [internal] load build context                                                              0.3s
 => => transferring context: 185B                                                              0.0s
 => CACHED [2/3] WORKDIR /app                                                                  0.0s
 => [3/3] COPY . .                                                                             0.5s
 => exporting to image                                                                         0.8s
 => => exporting layers                                                                        0.6s
 => => writing image sha256:37a6ba6990f911e6f8b9812a1a56269c1d462fb9f978abcf60b265343bdb0be4   0.0s
 => => naming to docker.io/library/test

docker run test

docker pull mongo
Using default tag: latest
latest: Pulling from library/mongo
Digest: sha256:82a55eb6d60997007ff390087d4e064218d477e9611a7becd78664a2ab490eff
Status: Image is up to date for mongo:latest
docker.io/library/mongo:latest

docker run -itd --name mongo -p 27017:27017 mongo --auth
e51301d396ce708970a184cc8889fdfa0e885b11ecf72a8cab504478d2fbb63f

docker exec -it mongo mongo admin
MongoDB shell version v5.0.8
connecting to: mongodb://127.0.0.1:27017/admin?compressors=disabled&gssapiServiceName=mongodb
Implicit session: session { "id" : UUID("f9026848-d867-4c81-aec3-29aad133ac1d") }
MongoDB server version: 5.0.8
================
Warning: the "mongo" shell has been superseded by "mongosh",
which delivers improved usability and compatibility.The "mongo" shell has been deprecated and will be removed in
an upcoming release.
For installation instructions, see
https://docs.mongodb.com/mongodb-shell/install/
================

db.createUser({ user:'admin',pwd:'123456',roles:[ { role:'userAdminAnyDatabase', db: 'admin'}]});
Successfully added user = {
  user: "admin",
  roles: [
    {
      role: "userAdminAnyDatabase",
      db: "admin",
    },
  ],
};

db.auth('admin','123456')

use mydatabase 	// 切换到 mydatabase k
switched to db mydatabase
db.createUser({ user: "mr-j", pwd: "123456", roles: [{ role: "dbOwner", db: "mydatabase" }] })

nano /etc/docker/daemon.json
{
   "registry-mirrors": [
       "https://mirror.ccs.tencentyun.com"
  ]
}
sudo systemctl restart docker

# 用nohup框起来，不然npm start执行了之后不会执行后面的
CMD nohup sh -c 'npm start && node ./server/server.js'

ENTRYPOINT ["./entrypoint.sh"]

// entrypoint.sh
nohup npm start &
nohup node ./server/server.js &

mv docker-compose-Linux-x86_64 /usr/bin/docker-compose
chmod 755 /usr/bin/docker-compose
docker-compose version

Docker Compose version v2.4.1