Support macOS (formerly: unable to build bottlerocket on macos)

Sure, here's the log. Not sure where the error comes from, AFAICS everything should be built in docker and hence machine-agnostic? Not sure though where the local rust part comes in...

```
bottlerocket-os/bottlerocket#21 236.6 error: could not compile `sundog`
bottlerocket-os/bottlerocket#21 236.6
bottlerocket-os/bottlerocket#21 236.6 Caused by:
bottlerocket-os/bottlerocket#21 236.6 process didn't exit successfully: `/usr/bin/rustc --crate-name sundog --edition=2018 api/sundog/src/main.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,link -C opt-level=3 -C embed-bitcode=no -C debuginfo=2 -C metadata=f1dda1c0b15e0c90 -C extra-filename=-f1dda1c0b15e0c90 --out-dir /home/builder/.cache/x86_64-bottlerocket-linux-gnu/release/deps --target x86_64-bottlerocket-linux-gnu -C linker=/usr/bin/x86_64-bottlerocket-linux-gnu-gcc -L dependency=/home/builder/.cache/x86_64-bottlerocket-linux-gnu/release/deps -L dependency=/home/builder/.cache/release/deps --extern apiclient=/home/builder/.cache/x86_64-bottlerocket-linux-gnu/release/deps/libapiclient-cee067d451d7b166.rlib --extern constants=/home/builder/.cache/x86_64-bottlerocket-linux-gnu/release/deps/libconstants-37ede6ace73bb42f.rlib --extern datastore=/home/builder/.cache/x86_64-bottlerocket-linux-gnu/release/deps/libdatastore-dbb12debb9ff125d.rlib --extern http=/home/builder/.cache/x86_64-bottlerocket-linux-gnu/release/deps/libhttp-68066c2bc6086886.rlib --extern log=/home/builder/.cache/x86_64-bottlerocket-linux-gnu/release/deps/liblog-56fb0fccdab81be0.rlib --extern model=/home/builder/.cache/x86_64-bottlerocket-linux-gnu/release/deps/libmodel-0c570bc5f68d5a14.rlib --extern serde=/home/builder/.cache/x86_64-bottlerocket-linux-gnu/release/deps/libserde-0fe5639f2e2024f0.rlib --extern serde_json=/home/builder/.cache/x86_64-bottlerocket-linux-gnu/release/deps/libserde_json-43d9398d57cbcc08.rlib --extern simplelog=/home/builder/.cache/x86_64-bottlerocket-linux-gnu/release/deps/libsimplelog-192c7c07a4f82e7a.rlib --extern snafu=/home/builder/.cache/x86_64-bottlerocket-linux-gnu/release/deps/libsnafu-8194cd9e9fb48158.rlib --extern tokio=/home/builder/.cache/x86_64-bottlerocket-linux-gnu/release/deps/libtokio-0c8ac197f1b09636.rlib -Cprefer-dynamic -Copt-level=3 -Cdebuginfo=2 -Ccodegen-units=1 -Clink-arg=-Wl,-z,relro,-z,now -L native=/home/builder/.cache/x86_64-bottlerocket-linux-gnu/release/build/ring-e73751118ec72435/out` (signal: 9, SIGKILL: kill)
bottlerocket-os/bottlerocket#21 236.6 warning: build failed, waiting for other jobs to finish...
bottlerocket-os/bottlerocket#21 372.4 error: Bad exit status from /var/tmp/rpm-tmp.t16z5j (%build)
bottlerocket-os/bottlerocket#21 372.4
bottlerocket-os/bottlerocket#21 372.4 RPM build errors:
bottlerocket-os/bottlerocket#21 372.4 Bad exit status from /var/tmp/rpm-tmp.t16z5j (%build)
bottlerocket-os/bottlerocket#21 ERROR: executor failed running [/bin/sh -c rpmbuild -ba --clean --undefine _auto_set_build_flags rpmbuild/SPECS/${PACKAGE}.spec]: exit code: 1
------
> [rpmbuild 7/7] RUN --mount=source=.cargo,target=/home/builder/.cargo --mount=type=cache,target=/home/builder/.cache,from=cache,source=/cache --mount=type=cache,target=/home/builder/rpmbuild/BUILD/sources/models/src/variant,from=variantcache,source=/variantcache --mount=type=cache,target=/home/builder/rpmbuild/BUILD/sources/logdog/conf/current,from=variantcache,source=/variantcache --mount=source=sources,target=/home/builder/rpmbuild/BUILD/sources rpmbuild -ba --clean --undefine _auto_set_build_flags rpmbuild/SPECS/os.spec:
------
executor failed running [/bin/sh -c rpmbuild -ba --clean --undefine _auto_set_build_flags rpmbuild/SPECS/${PACKAGE}.spec]: exit code: 1

--- stderr
BuildAttempt: Failed to execute command: 'docker build . --network none --target package --tag buildsys-pkg-os-x86_64-d4ae984f528b --build-arg PACKAGE=os --build-arg ARCH=x86_64 --build-arg GOARCH=amd64 --build-arg VARIANT=aws-k8s-1.24 --build-arg VARIANT_PLATFORM=aws --build-arg VARIANT_RUNTIME=k8s --build-arg VARIANT_FAMILY=aws-k8s --build-arg VARIANT_FLAVOR= --build-arg REPO=default --build-arg SDK=public.ecr.aws/bottlerocket/bottlerocket-sdk-x86_64:v0.29.0 --build-arg TOOLCHAIN=public.ecr.aws/bottlerocket/bottlerocket-toolchain-x86_64:v0.29.0 --build-arg NOCACHE=3534030891 --build-arg TOKEN=d4ae984f528b'
[cargo-make] ERROR - Error while executing command, exit code: 101
[cargo-make] WARN - Build Failed.
```

_Originally posted by @pat-s in https://github.com/bottlerocket-os/bottlerocket/issues/2685#issuecomment-1405322367_

Start by reproducing the macOS build with the `docker build` command and cargo-make invocation shown in the report, focusing on the `sundog` Rust compilation failure and its SIGKILL. Trace the build entry points involved in selecting the Docker SDK, toolchain, and linker; done means the reported Bottlerocket build completes successfully on macOS.

Written by the indexing model from the issue text.