add db-port cli option documentation

Author: geichelberger

docs/CLI.md

@@ -813,7 +813,7 @@ Install everything required for CI testing
 
 ### Usage
 
-* `install [--moodle MOODLE] [--data DATA] [--repo REPO] [--branch BRANCH] [--plugin PLUGIN] [--db-type DB-TYPE] [--db-user DB-USER] [--db-pass DB-PASS] [--db-name DB-NAME] [--db-host DB-HOST] [--not-paths NOT-PATHS] [--not-names NOT-NAMES] [--extra-plugins EXTRA-PLUGINS] [--no-init] [--node-version NODE-VERSION]`
+* `install [--moodle MOODLE] [--data DATA] [--repo REPO] [--branch BRANCH] [--plugin PLUGIN] [--db-type DB-TYPE] [--db-user DB-USER] [--db-pass DB-PASS] [--db-name DB-NAME] [--db-host DB-HOST] [--db-port DB-PORT] [--not-paths NOT-PATHS] [--not-names NOT-NAMES] [--extra-plugins EXTRA-PLUGINS] [--no-init] [--node-version NODE-VERSION]`
 
 Install everything required for CI testing
 
@@ -909,6 +909,15 @@ Database host
 * Is multiple: no
 * Default: `'localhost'`
 
+#### `--db-port`
+
+Database port
+
+* Accept value: yes
+* Is value required: yes
+* Is multiple: no
+* Default: `''`
+
 #### `--not-paths`
 
 CSV of file paths to exclude