Add all files needed to bring up VM and run agaric.com locally

box/docs/deployment/multisite.md

@@ -0,0 +1,44 @@
+For multisite installations, make the changes outlined in the [Local Drupal codebase](local-codebase.md) guide, but, using the `apache_vhosts` variable (or `nginx_vhosts` if using Nginx), configure as many domains pointing to the same docroot as you need:
+
+```yaml
+drupal_core_path: "/var/www/my-drupal-site"
+
+...
+
+apache_vhosts:
+  # Drupal VM's default domain, evaluating to whatever `vagrant_hostname` is set to (drupalvm.test by default).
+  - servername: "{{ drupal_domain }}"
+    serveralias: "www.{{ drupal_domain }}"
+    documentroot: "{{ drupal_core_path }}"
+    extra_parameters: "{{ apache_vhost_php_fpm_parameters }}"
+
+  - servername: "local.second-drupal-site.com"
+    documentroot: "{{ drupal_core_path }}"
+    extra_parameters: "{{ apache_vhost_php_fpm_parameters }}"
+
+  - servername: "local.third-drupal-site.com"
+    documentroot: "{{ drupal_core_path }}"
+    extra_parameters: "{{ apache_vhost_php_fpm_parameters }}"
+```
+
+If you need additional databases and database users, add them to the list of `mysql_databases` and `mysql_users`:
+
+```yaml
+mysql_databases:
+  - name: drupal
+    encoding: utf8
+    collation: utf8_general_ci
+  - name: drupal_two
+    encoding: utf8
+    collation: utf8_general_ci
+
+mysql_users:
+  - name: drupal
+    host: "%"
+    password: drupal
+    priv: "drupal.*:ALL"
+  - name: drupal-two
+    host: "%"
+    password: drupal-two
+    priv: "drupal_two.*:ALL"
+```