update backupbot label

compose.signal.yml

@@ -32,10 +32,6 @@ services:
       - signal-data:/data
     networks:
       - internal
-    deploy:
-      labels:
-          backupbot.backup: "true"
-          backupbot.backup.path: "/data"
 
   signaldb:
     image: postgres:13-alpine
@@ -56,10 +52,13 @@ services:
       - signal-postgres:/var/lib/postgresql/data
     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/backup.sql"
-          backupbot.backup.post-hook: "rm -r /var/lib/postgresql/data/backup.sql"
-          backupbot.backup.path: "/var/lib/postgresql/data"
+        backupbot.backup.pre-hook: "/pg_backup.sh backup"
+        backupbot.backup.volumes.signal-postgres.path: "backup.sql"
+        backupbot.restore.post-hook: '/pg_backup.sh restore'
+    configs:
+        - source: pg_backup
+          target: /pg_backup.sh
+          mode: 0555
 
 configs:
   signal_bridge_yaml: