I installed it by running sudo apt-get install phpymyadmin and then running
sudo ln -s /usr/share/phpmyadmin/ /usr/share/nginx/html and
Install phpMyAdmin
SSH into Homestead vagrant box with vagrant ssh and type the following command:
sudo apt-get install phpmyadmin
When prompted to select the Web server, select apache2 and press Enter, just to get pass it.
When prompted to config database for phpmyadmin with dbconfig-common, select Yes and press Enter.
When prompted for Password of the database's administrative user, enter secret and press Enter.
When prompted for MySQL application password for phpmyadmin, enter secret and press Enter.
When prompted for Password confirmation, enter secret again and press Enter.
Then Create and config site for Nginx
sudo ln -s /usr/share/phpmyadmin/ /usr/share/nginx/html/phpmyadmin
cd /etc/nginx/sites-available
sudo cp homestead.app phpmyadmin.app
sudo sed -i 's/homestead.app/phpmyadmin.app/g' /etc/nginx/sites-available/phpmyadmin.app
sudo sed -i 's/home\/vagrant\/Code\/Laravel\/public/usr\/share\/nginx\/html\/phpmyadmin/g' /etc/nginx/sites-available/phpmyadmin.app
sudo ln -s /etc/nginx/sites-available/phpmyadmin.app /etc/nginx/sites-enabled/phpmyadmin.app
sudo service nginx restart
sudo service php5-fpm retart
Adding phpMyAdmin.app to your hosts file
127.0.0.1 phpmyadmin.app
Navigate to http://phpmyadmin.app:8000 and you should now see phpMyAdmin login page.
More info available here if you need it