add backupbot labels

compose.postgres.yml

@@ -23,6 +23,12 @@ services:
       - POSTGRES_USER=grist
       - POSTGRES_DB=grist
       - POSTGRES_PASSWORD_FILE=/run/secrets/db_password
+    deploy:
+      labels:
+        backupbot.backup: "true"
+        backupbot.backup.pre-hook: "PGPASSWORD=$$(cat $${POSTGRES_PASSWORD_FILE}) pg_dump -U $${POSTGRES_USER} $${POSTGRES_DB} > /var/lib/postgresql/data/postgres-backup.sql"
+        backupbot.backup.post-hook: "rm -rf /var/lib/postgresql/data/postgres-backup.sql"
+        backupbot.backup.path: "/var/lib/postgresql/data/"
 
 secrets:
   db_password:

compose.yml

@@ -39,6 +39,8 @@ services:
         - "caddy.reverse_proxy={{upstreams 8484}}"
         - "caddy.tls.on_demand="
         - "coop-cloud.${STACK_NAME}.version=2.1.1+1.1.15"
+        - "backupbot.backup=true"
+        - "backupbot.backup.path=/persist"
 
   redis:
     image: redis:7.2-alpine