Expand deployment and sync documentation

.env.example

@@ -29,9 +29,9 @@ OVERWRITE_ARCHIVE_EXTERNAL_LINK=false
 DEFAULT_STOCK_QUANTITY=1
 INVENTREE_STOCK_STATUS=10
 PART_IPN_PREFIX=BMB
-PART_KEY_FIELDS=filename,name
+PART_KEY_FIELDS=content_hash,filename,print_name,name
 BACKFILL_PAGE_SIZE=50
-POLL_INTERVAL_SECONDS=0
+POLL_INTERVAL_SECONDS=300
 SYNC_ON_STARTUP=false
 HTTP_TIMEOUT_SECONDS=30