Cache Go dependency downloads in cli.Dockerfile#387
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Previously the Dockerfile copied source then go.mod/go.sum and built in one shot, so any source change invalidated the layer and re-downloaded every module. Copy go.mod/go.sum (plus the workers/go/harness/api replace target, required for the module graph to resolve) first and run `go mod download` as its own layer, then copy source and build. Dependency downloads now cache independently of source edits. Verified by building the CLI image with podman. stack-info: PR: #387, branch: lilydoar/stack/19
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This was referenced May 29, 2026
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Stacked PRs:
Cache Go dependency downloads in cli.Dockerfile
Previously the Dockerfile copied source then go.mod/go.sum and built in one
shot, so any source change invalidated the layer and re-downloaded every
module. Copy go.mod/go.sum (plus the workers/go/harness/api replace target,
required for the module graph to resolve) first and run
go mod downloadasits own layer, then copy source and build. Dependency downloads now cache
independently of source edits. Verified by building the CLI image with podman.