Deploy with git pull on the server

The server reads the private repository with its own read-only deploy
key, then pulls and rebuilds. The README no longer tells you to copy a
local working tree to the server. Git and Docker ignore backups/.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

.dockerignore

@@ -4,3 +4,4 @@ dist
 .env
 *.sqlite*
 *.csv
+backups/