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Commands that version every module of a stack on its own, build its image under a tag that means exactly one build, refuse to reuse a version or swallow a failed compile, and archive images by name and tag so versions never overwrite each other.
Two commands that keep three environments apart on one machine and one web server: one sets an environment's addresses and aligns every file that stores them, rendering nginx from templates and refusing on clashes; the other points the browser at one environment.
Three commands that take a tested release into production without overwriting what production owns: they promote configuration structure but keep its secrets and addresses, refuse to copy new secrets, and apply schema migrations the images carry.
Three commands that build a full copy of production for one release — configuration from the repository, images from the registry, data from the latest backup — restore it in order, run the release's migrations against that data, and remove it without a trace.
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