# 从repository查找mongo的相关镜像，结果很多，其中第一条为官方的镜像
$ docker search mongo
# 下载官方镜像的最新版本
$ docker pull mongo:latest
# 完成后，检查是否下载成功
$ docker images
REPOSITORY   TAG     IMAGE ID   CREATED    SIZE
centos    7     5e35e350aded  12 days ago   203MB
mongo    latest    965553e202a4  3 weeks ago   363MB
hello-world   latest    fce289e99eb9  10 months ago  1.84kB

$ docker run -itd --name mongo -p 27017:27017 mongo --auth
305ebd8236678905d16dd76e75dcf99fdd812be6b13c240acece7985d29b316c

# 进入容器可以用以下两种方法
# 分别是通过容器名和容器ID
$ docker exec -it mongo bash
$ docker exec -it 305ebd823667 bash

# 默认连接本地的27017端口的MongoDB
$ mongo
# 指定IP与端口进行连接
$ mongo 127.0.0.1:27017
# 指定用户名和密码连接到指定的MongoDB数据库
$ mongo 127.0.0.1:27017/admin -u user -p password

root@305ebd823667:/# mongo --version
MongoDB shell version v4.2.1
git version: edf6d45851c0b9ee15548f0f847df141764a317e
OpenSSL version: OpenSSL 1.1.1 11 Sep 2018

root@305ebd823667:/# mongo
> db.version()
4.2.1

> use admin
switched to db admin
> 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');
1
> db.createUser({ user:'user',pwd:'123456',roles:[ { role:'readWrite', db: 'testdb'}]});
Successfully added user: {
	"user" : "user",
	"roles" : [
		{
			"role" : "readWrite",
			"db" : "testdb"
		}
	]
}
> 

> db.auth('user','123456')
1
> use testdb
switched to db testdb
> 
> db.person.insert({name:'Larry',age:18})
WriteResult({ "nInserted" : 1 })
> db.person.find({})
{ "_id" : ObjectId("5ddaa14edbbac3c4f844366c"), "name" : "Larry", "age" : 18 }
>