Advanced topics

Pages here cover packaging, images, checkpoints, tokenizer tarballs, and running several operations inside one stage.

:maxdepth: 1

code-upload
docker
checkpoints
tokenizer-artifact
multiple-operations

Guides

Page	What it covers
Code upload	Tar layout, `upload_modules`, `upload_paths`, wrappers
Docker	`docker_image`, registry auth, GPU images
Checkpoints	Single-file model upload + mount
Tokenizer artifact	Tarball upload + env vars for processor trees
Multiple operations	Several `run_*` calls in one `run()`

Topic	Typical trigger
Code upload	Any stage with `src/` in prod
Docker	Import errors for `torch`, CUDA, or system libs on workers
Checkpoints	ML inference map jobs needing a `.pt` / `.bin`
Tokenizer tarball	NLP models needing `tokenizer.json` plus vocab dirs
Multiple operations	One stage that maps then validates without splitting stages