https://blog.csdn.net/neuldp/article/details/52232888

//Caddyfile 

my-owncloud-site.com {

    root owncloud
    log owncloud/access.log
    errors owncloud/access.log

    fastcgi / 127.0.0.1:9000 php {
            env PATH /bin
    }

    rewrite {
        r ^/index.php/.*$
        to /index.php?{query}
    }

    # client support (e.g. os x calendar / contacts)
    redir /.well-known/carddav /remote.php/carddav 301
    redir /.well-known/caldav /remote.php/caldav 301

    # remove trailing / as it causes errors with php-fpm
    rewrite {
        r ^/remote.php/(webdav|caldav|carddav)(\/?)$
        to /remote.php/{1}
    }

    rewrite {
        r ^/remote.php/(webdav|caldav|carddav)/(.+)(\/?)$
        to /remote.php/{1}/{2}
    }

    # .htacces / data / config / ... shouldn't be accessible from outside
    rewrite {
        r  ^/(?:\.htaccess|data|config|db_structure\.xml|README)
        status 403
    }

    header / Strict-Transport-Security "15768000"

}