Apps

The repository builds four production binaries and a couple of development helpers, all rooted in cmd/.

Binaries

Binary	Source	Role
containerd	cmd/containerd/	The daemon. Loads plugins, exposes gRPC/ttrpc/debug sockets.
containerd-shim-runc-v2	cmd/containerd-shim-runc-v2/	Per-container shim. Exec's runc, owns the container's lifecycle, talks ttrpc back to the daemon.
ctr	cmd/ctr/	Development/debug CLI for the daemon. Not stable user-facing.
containerd-stress	cmd/containerd-stress/	Concurrency stress driver used in CI and capacity testing.

Helper binaries

Binary	Source	Purpose
gen-manpages	cmd/gen-manpages/	Renders urfave/cli command trees to roff manpages
go-buildtag	cmd/go-buildtag/	Postprocessor that injects //go:build constraints into generated _grpc.pb.go files so the shim can be built without gRPC
protoc-gen-go-fieldpath	cmd/protoc-gen-go-fieldpath/	Protobuf plugin that generates a Field accessor for events used in filters

Build entry points

All binaries are built by the same Make rule:

bin/%: cmd/% FORCE
    $(call BUILD_BINARY)

The rule is overridden for containerd-shim-runc-v2, which is built with CGO_ENABLED=0 and no_grpc for a static, gRPC-free shim, and for gen-manpages, which is built without the urfave_cli_no_docs build tag so it can render docs.