Updated Vagrantfile

Added triggers to Vagrantfile for up and destroy commands.
After vagrant up is executed an attempt to restore db data accures.
Before vagrant destroy is executed a save to db data accures.

Vagrantfile

@@ -1,4 +1,20 @@
+db_file_exists    = "test -f /vagrant/edison/db.sql"
+restore_db        = "sudo -u postgres psql edison < /vagrant/edison/db.sql"
+db_restored_msg   = "echo \"Database restored.\""
+db_not_exists_msg = "echo \"db.sql not exists.\""
+try_restore_db    = "bash -c '#{db_file_exists} && #{restore_db} && #{db_restored_msg} || #{db_not_exists_msg}'"
+save_db_data      = "sudo -u postgres pg_dump edison > /vagrant/edison/db.sql"
+
 Vagrant.configure("2") do |config|
+  config.trigger.before :destroy do |trigger|
+    trigger.info = "Saving database data inside synced folder..."
+    trigger.run_remote = {inline: "#{save_db_data}"}
+  end
+
+  config.trigger.after :up do |trigger|
+    trigger.info = "Trying to restore database from /vagrant/edison/db.sql..."
+    trigger.run_remote = {inline: "#{try_restore_db}"}
+  end
 
   config.vm.box = "ubuntu/bionic64"
   config.vm.provision :shell, path: "setup.sh"