-apt-get install -y ruby2.7 libruby2.7 ruby2.7-dev \
- libxml2-dev libxslt1-dev nodejs yarnpkg \
- apache2 apache2-dev build-essential git-core firefox-geckodriver \
- postgresql postgresql-contrib libpq-dev libvips-dev \
+apt-get install -y ruby ruby-dev ruby-bundler \
+ libxml2-dev libxslt1-dev nodejs npm \
+ build-essential git-core \
+ postgresql postgresql-contrib libpq-dev libvips-dev libyaml-dev \