migrate to v4

public/v4/apps/mattermost.yml

@@ -0,0 +1,56 @@
+captainVersion: 4
+services:
+  $$cap_appname-postgres:
+    image: postgres@$$cap_postgres_version
+    volumes:
+      - $$cap_appname-postgres-data:/var/lib/postgresql/data
+    restart: always
+    environment:
+      POSTGRES_USER: mattermost
+      POSTGRES_PASSWORD: $$cap_pg_pass
+      POSTGRES_DB: mattermost
+    caproverExtra:
+      notExposeAsWebApp: "true"
+  $$cap_appname:
+    depends_on:
+      - $$cap_appname-postgres
+    volumes:
+      - $$cap_appname-data:/mattermost/data
+      - $$cap_appname-logs:/mattermost/logs
+      - $$cap_appname-config:/mattermost/config
+      - $$cap_appname-plugins:/mattermost/plugins
+      - $$cap_appname-clientplugins:/mattermost/client/plugins
+    restart: always
+    environment:
+      MM_SQLSETTINGS_DATASOURCE: postgres://mattermost:$$cap_pg_pass@srv-captain--$$cap_appname-postgres:5432/mattermost?sslmode=disable&connect_timeout=10
+      MM_SERVICESETTINGS_SITEURL: https://$$cap_appname.$$cap_root_domain
+      MM_LOGSETTINGS_ENABLEDIAGNOSTICS: "false"
+      MM_SERVICESETTINGS_ENABLESECURITYFIXALERT: "false"
+      MM_SQLSETTINGS_DRIVERNAME: postgres
+    caproverExtra:
+      containerHttpPort: "8065"
+      dockerfileLines:
+        - FROM mattermost/mattermost-team-edition@$$cap_mattermost_version
+        - RUN sed -i 's#api.segment.io#xx.example.com#gI' /mattermost/bin/mattermost
+        - RUN sed -i 's#securityupdatecheck.mattermost.com#xxxxxxxxxxxxxxxxxxxxxx.example.com#gI' /mattermost/bin/mattermost
+caproverOneClickApp:
+  variables:
+    - id: $$cap_postgres_version
+      label: Postgres Docker Image SHA Hash
+      defaultValue: sha256:110d3325db02daa6e1541fdd37725fcbecb7d51411229d922562f208c51d35cc
+      description: Check out their Docker page for the valid tags https://hub.docker.com/r/library/postgres/tags/ - default is 12.2 as of 2020-03-16
+    - id: $$cap_mattermost_version
+      label: Mattermost Docker Image SHA Hash
+      defaultValue: sha256:f8a4416d0a50a03ebacdbcd44790d5996230da3f48dbefd02307e4fd713567aa
+      description: Check out their Docker page for the valid tags https://hub.docker.com/r/mattermost/mattermost-team-edition/tags - default is current as of 2020-03-16
+    - id: $$cap_pg_pass
+      label: Postgres Password
+      description: Password must be at least 30 characters.  Please use a random string.
+      validRegex: /^[^\@]{30,}$/
+  instructions:
+    start: Open-source collaboration/chat server Mattermost Team Edition.
+    end: Mattermost is deployed and available as srv-captain--$$cap_appname:80.  Note that the application may take up to ten minutes to become available.  Following deployment you must verify MM_SERVICESETTINGS_SITEURL in the application's environment refers to your app's official public URL.
+  displayName: Mattermost
+  isOfficial: true
+  description: Mattermost Team Edition open source collaboration/chat software
+  documentation: https://github.com/mattermost/mattermost-docker