Consolidate Linux prerequisites (#5751)

Author: MikeMcC399

docs/guides/continuous-integration/introduction.mdx

@@ -309,22 +309,11 @@ shorter ones, following
 
 ### Dependencies
 
-If you are not using one of the above CI providers then make sure your system
-has these dependencies installed.
+Cypress runs on many CI providers' virtual machine environments out-of-the-box without needing additional dependencies installed.
 
 #### Linux
 
-#### Ubuntu/Debian
-
-```shell
-apt-get install libgtk2.0-0 libgtk-3-0 libgbm-dev libnotify-dev libnss3 libxss1 libasound2 libxtst6 xauth xvfb
-```
-
-#### CentOS
-
-```shell
-yum install -y xorg-x11-server-Xvfb gtk2-devel gtk3-devel libnotify-devel GConf2 nss libXScrnSaver alsa-lib
-```
+If you see a message about a missing dependency when you run Cypress in a Linux CI environment, then refer to the [Linux Prerequisites](/guides/getting-started/installing-cypress#Linux-Prerequisites) lists for guidance.
 
 ### Caching
 

docs/guides/getting-started/installing-cypress.mdx

@@ -139,8 +139,8 @@ just need help with troubleshooting, check out our
 
 Please read our
 [Continuous Integration](/guides/continuous-integration/introduction) docs for
-help installing Cypress in CI. When running in Linux you'll need to install some
-[system dependencies](/guides/continuous-integration/introduction#Dependencies)
+help installing Cypress in CI. When running in Linux you may need to install some
+[system dependencies](#Linux-Prerequisites)
 or you can use our [Docker images](/examples/docker) which have everything you
 need prebuilt.
 
@@ -203,7 +203,9 @@ requirements:
 ### Linux Prerequisites
 
 If you're using Linux, you'll want to have the required dependencies installed
-on your system.
+on your system. Depending on your system defaults, these dependencies may already be installed.
+If not, run the command line for your operating system listed below.
+[Cypress Docker images](#Docker), which are Debian-based, already include the necessary dependencies.
 
 #### Ubuntu/Debian