sneak 3eb9f81fc4 docs: name the two required flags, and record .dockerignore as part of the gate ...

Comments and documentation only; the docker build invocation and its flags
are untouched, and .dockerignore's effective rules are unchanged.

Two prose gaps from review. First, "both flags below must stay" had lost
its anchor: it ended a paragraph naming only --no-cache-filter, --target
was not introduced until the next one, and three flags follow on the
command, so a reader could pick the wrong pair. It now names --target and
--no-cache-filter explicitly.

Second, the list of things the tooling does not check covered the $stage
seam but not .dockerignore, which sits in the same trust boundary and is
the more likely thing to be edited — the first review on this change
actively suggested extending it for build artifacts. Only what reaches the
container is linted, so excluding a Go source there removes it from the
lint with no warning. Verified rather than asserted: a planted violation
plus that one path in .dockerignore yields `0 issues.` at exit 0 with the
violation still in the working tree, while excluding a file other code
still references fails loudly on `undefined:` typecheck errors instead.
The warning is recorded in script/lint alongside the $stage seam and in
.dockerignore itself, where the edit would actually be made.

2026-08-10 13:29:44 +00:00

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