docker: ignore more files

.dockerignore

@@ -34,12 +34,20 @@ package.json
 .vscode
 .devcontainer
 
+# Created databases
+*.db
+*.db-shm
+*.db-wal
+
+# These are backup files generated by rustfmt
+**/*.rs.bk
+
 # Various config files that shouldn't be tracked
 .env
 lldap_config.toml
 server_key
-users.db*
 screenshot.png
 recipe.json
+lldap_config.toml
 cert.pem
 key.pem