feat(postgres): optimize documentation and add default password (#771)

* docs(postgres): removed postgres from labels

* feat(postgres): add generated default password

* docs(postgres): optimize descriptions

* docs(postgres): optimize instructions

* docs(postgres): remove 'taken from' documentation

public/v4/apps/postgres.yml

@@ -15,37 +15,37 @@ services:
 caproverOneClickApp:
     variables:
         - id: $$cap_postgres_version
-          label: Postgres Version
+          label: Version
           defaultValue: '14.5'
-          description: Check out their Docker page for the valid tags https://hub.docker.com/r/library/postgres/tags/
+          description: Check out their Docker page for the valid tags https://hub.docker.com/r/library/postgres/tags
           validRegex: /^([^\s^\/])+$/
         - id: $$cap_pg_user
-          label: Postgres Username
+          label: Username
           defaultValue: postgres
-          description: ''
           validRegex: /.{1,}/
         - id: $$cap_pg_pass
-          label: Postgres Password
+          label: Password
-          description: ''
+          defaultValue: $$cap_gen_random_hex(16)
           validRegex: /.{1,}/
         - id: $$cap_pg_db
-          label: Postgres Default Database
+          label: Default Database
           defaultValue: postgres
-          description: ''
           validRegex: /.{1,}/
         - id: $$cap_pg_initdb_args
-          label: "OPTIONAL: Arguments for 'postgres initdb'"
+          label: Optional Arguments
-          description: For example, --data-checksums
+          description: >-
+              Arguments will be appended to `postgres initdb`.
+              Example: `--data-checksums`.
           validRegex: /.{0,}/
     instructions:
-        start: >-
+        start: |-
-            PostgreSQL, often simply Postgres, is an object-relational database management system (ORDBMS) with an emphasis on extensibility and standards-compliance. As a database server, its primary function is to store data, securely and supporting best practices, and retrieve it later, as requested by other software applications, be it those on the same computer or those running on another computer across a network (including the Internet). It can handle workloads ranging from small single-machine applications to large Internet-facing applications with many concurrent users.
+            PostgreSQL, often simply Postgres, is an object-relational database management system (ORDBMS) with an emphasis on extensibility and standards-compliance.
-
+            As a database server, its primary function is to store data, securely and supporting best practices, and retrieve it later, as requested by other software applications, be it those on the same computer or those running on another computer across a network (including the Internet).
-            After installation on CapRover, it will be available as srv-captain--YOUR_CONTAINER_NAME at port 5432 to other CapRover apps.
+            It can handle workloads ranging from small single-machine applications to large Internet-facing applications with many concurrent users.
-
+        end: |-
-            Enter your Postgres Configuration parameters and click on next. It will take about a minute for the process to finish.
+            Postgres is deployed and available as `srv-captain--$$cap_appname:5432` to other apps.
-        end: "Postgres is deployed and available as srv-captain--$$cap_appname:5432 to other apps. For example with NodeJS: 'const client = new Client({ user: '$$cap_pg_user', host: 'srv-captain--$$cap_appname', database: '$$cap_pg_db', password: '********', port: 5432})'"
+            For example with Node.js: `const client = new Client({ user: '$$cap_pg_user', host: 'srv-captain--$$cap_appname', database: '$$cap_pg_db', password: '$$cap_pg_pass', port: 5432})`
     displayName: PostgreSQL
     isOfficial: true
     description: The PostgreSQL object-relational database system provides reliability and data integrity
-    documentation: Taken from https://hub.docker.com/_/postgres
+    documentation: https://hub.docker.com/_/postgres