add FreshRSS (#778)

* add FreshRSS

Add FreshRSS from official docker image

> FreshRSS is a self-hosted RSS and Atom feed aggregator.
> It is lightweight, easy to work with, powerful, and customizable.

* fix formatting

of course I forgot to run prettier 🤦‍♂️

* remove backup from freshrss

public/v4/apps/freshrss.yml

@@ -0,0 +1,118 @@
+captainVersion: 4
+services:
+    $$cap_appname-postgresql:
+        environment:
+            POSTGRES_PORT: 5432
+            POSTGRES_USER: $$cap_freshrss_POSTGRESQL_USER
+            POSTGRES_PASSWORD: $$cap_freshrss_POSTGRESQL_PASS
+        image: postgres:$$cap_fresrss_psql_version
+        restart: always
+        volumes:
+            - $$cap_appname-postgresql-data:/var/lib/postgresql/data
+        caproverExtra:
+            notExposeAsWebApp: true
+    '$$cap_appname':
+        image: freshrss/freshrss:$$cap_version
+        environment:
+            TZ: '$$cap_tz'
+            CRON_MIN: '$$cap_cron'
+            FRESHRSS_ENV: '$$cap_env'
+            PUBLISHED_PORT: '80'
+            ADMIN_EMAIL: '$$cap_admin_email'
+            ADMIN_PASSWORD: '$$cap_admin_pass'
+            ADMIN_API_PASSWORD: '$$cap_api_pass'
+            DB_HOST: srv-captain--$$cap_appname-postgresql
+            DB_BASE: $$cap_freshrss_POSTGRESQL_DB
+            DB_PASSWORD: $$cap_freshrss_POSTGRESQL_PASS
+            DB_USER: $$cap_freshrss_POSTGRESQL_USER
+            FRESHRSS_INSTALL: |-
+                --api_enabled
+                --base_url https://$$cap_appname.$$cap_root_domain
+                --db-base $$cap_freshrss_POSTGRESQL_DB
+                --db-host srv-captain--$$cap_appname-postgresql
+                --db-password $$cap_freshrss_POSTGRESQL_PASS
+                --db-type pgsql
+                --db-user $$cap_freshrss_POSTGRESQL_USER
+                --default_user admin
+                --language en
+            FRESHRSS_USER: |-
+                --api_password $$cap_api_pass
+                --email $$cap_admin_email
+                --language en
+                --password $$cap_admin_pass
+                --user admin
+        volumes:
+            - '$$cap_appname-data:/var/www/FreshRSS/data'
+            - '$$cap_appname-extensions:/var/www/FreshRSS/extensions'
+        depends_on:
+            - $$cap_appname-postgresql
+        caproverExtra:
+            containerHttpPort: '80'
+caproverOneClickApp:
+    variables:
+        - id: '$$cap_version'
+          label: FreshRSS Version
+          defaultValue: '1.20.0'
+          description: Check out their Docker page for the valid tags https://hub.docker.com/r/freshrss/freshrss/tags
+          validRegex: "/^([^\\s^\\/])+$/"
+        - id: '$$cap_tz'
+          label: Time Zone
+          defaultValue: Europe/Vienna
+          description: Get yours from https://en.wikipedia.org/wiki/List_of_tz_database_time_zones
+          validRegex: '/.{1,}/'
+        - id: '$$cap_cron'
+          label: Cron Minutes
+          defaultValue: '2,32'
+          description: a valid cron minute definition such as '13,43' (recommended) or '*/20'. Not passing the CRON_MIN environment variable – or setting it to empty string – will disable the cron daemon.
+        - id: '$$cap_env'
+          label: Environment
+          defaultValue: 'production'
+          description: Enables additional development information if set to development (increases the level of logging and ensures that errors are displayed)
+        - id: '$$cap_admin_email'
+          label: Admin Email
+          defaultValue: 'admin@example.net'
+          description: Email Address for Admin login
+        - id: $$cap_admin_pass
+          label: Admin Password
+          defaultValue: $$cap_gen_random_hex(15)
+          description: 'The password of the admin user.'
+          validRegex: /.{1,}/
+        - id: $$cap_api_pass
+          label: API Password
+          defaultValue: $$cap_gen_random_hex(15)
+          description: 'The password of the admin API.'
+          validRegex: /.{1,}/
+
+        - id: '$$cap_fresrss_psql_version'
+          label: PotgreSQL Version
+          defaultValue: '15.0'
+          description: Check out their Docker page for the valid tags https://hub.docker.com/_/postgres/tags
+          validRegex: "/^([^\\s^\\/])+$/"
+
+        - id: $$cap_freshrss_POSTGRESQL_USER
+          label: POSTGRESQL_USER
+          defaultValue: postgresuser
+          validRegex: /^([a-zA-Z0-9\-\.\_])+$/
+
+        - id: $$cap_freshrss_POSTGRESQL_PASS
+          label: POSTGRESQL_PASS
+          defaultValue: $$cap_gen_random_hex(10)
+          description: 'The password of freshrsss database user.'
+          validRegex: /.{1,}/
+
+        - id: $$cap_freshrss_POSTGRESQL_DB
+          label: POSTGRESQL_DB
+          defaultValue: freshrss_production
+          validRegex: /^([a-zA-Z0-9\-\.\_])+$/
+    instructions:
+        start: |-
+            FreshRSS is a self-hosted RSS feed aggregator like Leed or Kriss Feed.
+            It is lightweight, easy to work with, powerful, and customizable.
+
+            More details: https://github.com/FreshRSS/FreshRSS
+        end: |-
+            FreshRSS has been successfully deployed!
+    displayName: FreshRSS
+    isOfficial: true
+    description: FreshRSS is a self-hosted RSS feed aggregator like Leed or Kriss Feed.
+    documentation: See https://github.com/FreshRSS/FreshRSS