Vagrantfileの共有フォルダ指定箇所

こうすると

config.vm.synced_folder "./html", "/var/www/html", mount_options: ['dmode=777', 'fmode=777']

こうなる

[vagrant@localhost ~]$ cd /var/www/html
[vagrant@localhost html]$ ls -la
drwxrwxrwx 1 vagrant vagrant  102 Aug 15 07:19 .
drwxr-xr-x 6 root    root    4096 Aug 15 06:36 ..
-rwxrwxrwx 1 vagrant vagrant   10 Aug 15 07:19 index.html