* Bundler
* Javascript Runtime
-These can be installed on Ubuntu 16.04 or later with:
+These can be installed on Ubuntu 18.04 or later with:
```
-sudo apt-get install ruby2.5 libruby2.5 ruby2.5-dev \
+sudo apt-get update
+sudo apt-get install ruby2.5 libruby2.5 ruby2.5-dev bundler \
libmagickwand-dev libxml2-dev libxslt1-dev nodejs \
apache2 apache2-dev build-essential git-core \
postgresql postgresql-contrib libpq-dev postgresql-server-dev-all \