This is an NGINX WebDAV docker with some basic WebDAV functionality. Its main purpose is in end-to-end test environments to upload files.
Via two environment variables basic authentication can be set:
If either environment variable is missing, basic authentication is removed.
docker run -d --name webdav -p 80:80 -v $PWD:/var/www visity/webdav
It seems you didn't pack htpasswd into the image:
docker logs eb50469e66a9
/set_htpasswd.sh: line 5: htpasswd: command not found