Running zammad in docker behind caddy in docker

I don’t know caddy, i only use nginx for zammad , you use nginx and caddy both？ may you should try nginx first…
nginx also can support https ;
also , i set the zammad fqdn in web not in the env ;
my env only have:

NGINX_SERVER_SCHEME=https

What I want to explain here is that my method is not the method recommended in the official documents. I figured it out by myself. There may be certain problems. It is for reference only.

and i use my own nginx profile and passthrough to docker containner.

server {
    listen 80;
    server_name domain;
    
    # 将HTTP请求重定向到HTTPS
    location / {
        return 301 https://$host$request_uri;
    }
}

server {
    listen 443 ssl;
    server_name domain;
    
    ssl_certificate /etc/nginx/ssl/fullchain.pem;  # 修改为你的SSL证书路径
    ssl_certificate_key /etc/nginx/ssl/privkey.pem;  # 修改为你的SSL证书私钥路径

    # 强制使用较强的SSL协议和加密套件
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers HIGH:!aNULL:!MD5;
    
     # 其他 SSL 配置
    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 10m;
    client_max_body_size 50M;

    location / {
        proxy_pass http://localhost:8080;  # 修改为你的后端服务地址
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;

	    # WebSocket 相关的头信息
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
	    proxy_read_timeout 86400;

    }
    # 如果需要添加其他配置，请在此处添加
}