Joplin是一款很好用的笔记软件，支持多种同步源以及自建服务器同步笔记。
下面这篇文章来讲讲怎么安装同步服务端。

1：安装Docker.

2：安装docker-compose

sudo curl -L "https://github.com/docker/compose/releases/download/v2.15.1/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

3：设置文件权限

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

4：新建joplin文件夹和docker-compose.yml文件

# This is a sample docker-compose file that can be used to run Joplin Server
# along with a PostgreSQL server.
#
# Update the following fields in the stanza below:
#
# POSTGRES_USER
# POSTGRES_PASSWORD
# APP_BASE_URL
#
# APP_BASE_URL: This is the base public URL where the service will be running.
#  - If Joplin Server needs to be accessible over the internet, configure APP_BASE_URL as follows: https://example.com/joplin.
#  - If Joplin Server does not need to be accessible over the internet, set the the APP_BASE_URL to your server's hostname.
#     For Example: http://[hostname]:22300. The base URL can include the port.
# APP_PORT: The local port on which the Docker container will listen.
#  - This would typically be mapped to port to 443 (TLS) with a reverse proxy.
#  - If Joplin Server does not need to be accessible over the internet, the port can be mapped to 22300.
version: '3'
services:
    db:
        image: postgres:13
        volumes:
            - ./data/postgres:/var/lib/postgresql/data
        ports:
            - "5432:5432"
        restart: unless-stopped
        environment:
            - POSTGRES_PASSWORD=mjj
            - POSTGRES_USER=mjj
            - POSTGRES_DB=joplin
    app:
        image: joplin/server:latest
        depends_on:
            - db
        ports:
            - "22300:22300"
        restart: unless-stopped
        environment:
            - APP_PORT=22300
            - APP_BASE_URL=http://1.1.1.1:22300
            - DB_CLIENT=pg
            - POSTGRES_PASSWORD=mjj
            - POSTGRES_DATABASE=joplin
            - POSTGRES_USER=mjj
            - POSTGRES_PORT=5432
            - POSTGRES_HOST=db

修改POSTGRES_USER、POSTGRES_PASSWORD、APP_BASE_URL，其中APP_BASE_URL填写你的服务器IP：端口。

5:cd到joplin目录，执行以下命令开始运行：

docker-compose up -d

6：登陆 web 管理页面：
https://你的IP:22300/login，默认帐号 admin@localhost，默认密码 admin。修改密码，添加用户。

7：设置joplin同步。