WebDAV on Alpine

With nginx, WebDAV is only available in edge. (or at least it was in 2018 or so)

sed -i -e 's/v[[:digit:]]\..*\//edge\//g' /etc/apk/repositories
apk update;apk upgrade

Then you can install nginx and the htpasswd too

apk add nginx-mod-http-dav-ext 
apk add apache2-utils

htpasswd -c /etc/nginx/conf.d/passwords user1

sudo mkdir /var/lib/nginx/tmp/

server {
        listen 80 default_server;
        listen [::]:80 default_server;

        # Try some media
        location /video/ {
                alias /srv/media/video/;
                autoindex on;
                dav_ext_methods   PROPFIND OPTIONS;
		auth_basic "Authentication Required";
		auth_basic_user_file /etc/nginx/conf.d/passwords;
        }
}