Apprise (#609)

* Add Apprise

* 💄 Formatted

public/v4/apps/apprise.yml

@@ -0,0 +1,29 @@
+captainVersion: 4
+services:
+    # Apprise
+    $$cap_appname:
+        image: caronc/apprise:$$cap_apprise_version
+        restart: always
+        volume:
+            - $$cap_appname-data:/config
+        caproverExtra:
+            containerHttpPort: '8000'
+
+caproverOneClickApp:
+    variables:
+        - id: $$cap_apprise_version
+          label: Apprise Version
+          defaultValue: 'v0.7.0'
+          description: Check out their docker page for the valid tags https://hub.docker.com/r/caronc/apprise/tags
+          validRegex: /^([^\s^\/])+$/
+
+    instructions:
+        start: >-
+            Apprise allows you to send a notification to almost all of the most popular notification services available to us today such as: Telegram, Discord, Slack, Amazon SNS, Gotify, etc.
+        end: >-
+            Aaaand you're done! 😄
+            Your service is available at http://$$cap_appname.$$cap_root_domain
+    displayName: 'Apprise'
+    isOfficial: true
+    description: Apprise API was designed to easily fit into existing (and new) eco-systems that are looking for a simple notification solution.
+    documentation: Taken from https://github.com/caronc/apprise-api and https://hub.docker.com/r/caronc/apprise/