On how to customize the email content, I found a solution and open the tutorial

[axp007]

1, pull the official source code

apt update
apt install git
git clone https://github.com/ngoduykhanh/wireguard-ui.git

2, Modify main.go source code

vim main.go# Open the source file, search for const, find the following, modify
Before modification：

const (                         
        defaultEmailSubject = "Your wireguard configuration"
        defaultEmailContent = `Hi,</br>
<p>In this email you can find your personal configuration for our wireguard server.</p>

<p>Best</p>
`
)

Customize the modification, for example:

const (
        defaultEmailSubject = "Please check your Bee Talk VPN personal account！"
        defaultEmailContent = `Hi,</br>
<p>This is your personal VPN account, please refer to the VPN usage method<a href="https://blog.csdn.net/qq_62294245?spm=1000.2115.3001.5343" target="_blank">How to use VPN for employees</a></p>
<br>

<p>
  VPN related questions please nail nail contact: company headquarters/R&D center /
  <strong>Xiaopeng（anxiaopeng001@gmail.com）</strong>
</p>

<br>
<p>Download the VPN client software：https://www.wireguard.com/install/</p>

<br><br>
<strong>Xi 'an Xopeng linux Technology Co., LTD</strong>
`
)

3. Compile the image with Dockerfile

docker build --build-arg=GIT_COMMIT=$(git rev-parse --short HEAD) -t xiaopeng/wireguard-ui .

Wait until the image is compiled and check whether the image is generated

docker images
REPOSITORY                TAG       IMAGE ID       CREATED         SIZE
xiaopeng/wireguard-ui      latest    6f2552b43d3d   8 seconds ago   61.4MB

4. Edit the docker-compose file and start the container

Adjust the docker-compose file content to suit you
Run the wireguard-ui container

docker-compose up -d
docker ps -a

6. Note:

If the wireguard ui page cannot be accessed in a browser, the WireGuard UI page

rm -rf ./config/wg_confs/wg0.conf
mv ./config/wg0.conf ./config/wg_confs/wg0.conf

docker restart wireguard wireguard-ui