Add focalboard (caprover#414)

* feat: add Focalboard

* chore: format code

v4/apps/focalboard.yml

@@ -0,0 +1,66 @@
+captainVersion: 4
+services:
+    $$cap_appname-db:
+        image: postgres:$$cap_postgres_version
+        environment:
+            POSTGRES_DB: $$cap_postgres_db
+            POSTGRES_USER: $$cap_postgres_user
+            POSTGRES_PASSWORD: $$cap_postgres_password
+        volumes:
+            - '$$cap_appname-db-data:/var/lib/postgresql/data'
+        caproverExtra:
+            notExposeAsWebApp: 'true'
+
+    $$cap_appname:
+        environment:
+            CONFIG_JSON: '{"serverRoot":"http://srv-captain--$$cap_appname:8000","port":8000,"dbtype":"postgres","dbconfig":"postgres://$$cap_postgres_user:$$cap_postgres_password@srv-captain--$$cap_appname-db/$$cap_postgres_db?sslmode=disable&connect_timeout=10","postgres_dbconfig":"dbname=$$cap_postgres_db sslmode=disable","useSSL":false,"webpath":"./pack","filespath":"./files","telemetry":false,"session_expire_time":2592000,"session_refresh_time":18000,"localOnly":false,"enableLocalMode":true,"localModeSocketLocation":"/var/tmp/focalboard_local.socket"}'
+        depends_on:
+            - $$cap_appname-db
+        caproverExtra:
+            containerHttpPort: '8000'
+            dockerfileLines:
+                - FROM mattermost/focalboard:$$cap_focalboard_version
+                - CMD printenv CONFIG_JSON > /opt/focalboard/config.json && /opt/focalboard/bin/focalboard-server
+
+caproverOneClickApp:
+    variables:
+        - id: $$cap_focalboard_version
+          label: Focalboard Version
+          defaultValue: 0.6.5
+          description: 'Check out their docker page for the valid tags https://hub.docker.com/r/mattermost/focalboard/tags'
+        - id: $$cap_postgres_version
+          label: Postgres Version
+          defaultValue: 9.6.21
+          description: 'Check out their docker page for the valid tags https://hub.docker.com/_/postgres?tab=tags'
+        - id: $$cap_postgres_db
+          label: Postgres Database
+          defaultValue: boards
+        - id: $$cap_postgres_user
+          label: Postgres User
+          defaultValue: boardsuser
+        - id: $$cap_postgres_password
+          label: Postgres Password
+          defaultValue: $$cap_gen_random_hex(16)
+
+    instructions:
+        start: >-
+            Focalboard is an open source, self-hosted alternative to Trello, Notion, and Asana.
+            For more info visit https://www.focalboard.com/
+        end: |-
+            Focalboard has been successfully deployed!
+
+            --------------------------------------------
+
+            Before you proceed, please enable Websocket Support
+            https://$$cap_root_domain/#/apps/details/$$cap_appname
+
+            --------------------------------------------
+
+            App is available as http://$$cap_appname.$$cap_root_domain
+    displayName: Focalboard
+    isOfficial: false
+    description: >-
+        Focalboard is an open source, self-hosted alternative to Trello, Notion, and Asana.
+    documentation: >-
+        This docker-compose is taken from
+        https://github.com/mattermost/focalboard/blob/main/docker/docker-compose-db-nginx.yml