update backupbot label

compose.yml

@@ -78,18 +78,20 @@ services:
       - internal
     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 -f /var/lib/postgresql/data/backup.sql"
-        backupbot.backup.path: "/var/lib/postgresql/data/backup.sql"
-        backupbot.restore: "true"
-        backupbot.restore.post-hook: "sh -c 'psql -U $${POSTGRES_USER} -d $${POSTGRES_DB} < /var/lib/postgresql/data/backup.sql && rm -f /var/lib/postgresql/data/backup.sql'"
+        backupbot.backup: "${ENABLE_BACKUPS:-true}"
+        backupbot.backup.pre-hook: "/pg_backup.sh backup"
+        backupbot.backup.volumes.postgres.path: "backup.sql"
+        backupbot.restore.post-hook: '/pg_backup.sh restore'
     healthcheck:
       test: "pg_isready"
       interval: 30s
       timeout: 10s
       retries: 5
       start_period: 1m
+    configs:
+        - source: pg_backup
+          target: /pg_backup.sh
+          mode: 0555
 
 volumes:
   postgres:
@@ -111,3 +113,6 @@ configs:
     name: ${STACK_NAME}_entrypoint_${ENTRYPOINT_CONF_VERSION}
     file: entrypoint.sh.tmpl
     template_driver: golang
+  pg_backup:
+    name: ${STACK_NAME}_pg_backup_${PG_BACKUP_VERSION}
+    file: pg_backup.sh