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1.拉取postgresql的docker镜像

docker pull postgres

2.查看docker镜像

docker images

3.创建并运行postgresql容器

docker run -d --name postgres -e POSTGRES_PASSWORD=123456 -p 1234:5432 postgres:latest

4.查看docker状态

docker ps -a

5.进入postgresql容器

docker exec -it postgres /bin/bash

6.进入postgres用户

su postgres

7.进入postgres数据库

psql

8.查看postgres数据库用户

postgres=# \du
                                   List of roles
 Role name |                         Attributes                         | Member of 
-----------+------------------------------------------------------------+-----------
 postgres  | Superuser, Create role, Create DB, Replication, Bypass RLS | {}

postgres=# 

9.创建postgres数据库用户

postgres=# create user demo superuser password '123456';
CREATE ROLE
postgres=# \du
                                   List of roles
 Role name |                         Attributes                         | Member of 
-----------+------------------------------------------------------------+-----------
 demo  | Superuser                                                  | {}
 postgres  | Superuser, Create role, Create DB, Replication, Bypass RLS | {}

postgres=#

10.退出psql数据库，退出postgres数据库，退出postgres容器

postgres-# \q
postgres@582e42e89598:/$ exit
exit
root@582e42e89598:/# exit
exit

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待续……

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