Recipe files can now be put into their own directory `./recipes/`. This
directory is NEVER copied into the build so changes to a recipe will no
longer cause cache misses for builds. Here is an example of my build
changing the second to last module and only requiring the last 2 `RUN`
layers to be run again.
```
=> CACHED [stage-config 1/1] COPY ./config /config 0.0s
=> CACHED [stage-modules 1/2] COPY --from=ghcr.io/blue-build/modules:latest /modules /modules 0.0s
=> CACHED [stage-modules 2/2] COPY ./modules /modules 0.0s
=> CACHED [stage-keys 1/1] COPY cosign.pub /keys/jp-desktop-gaming.pub 0.0s
=> CACHED [stage-4 2/16] RUN --mount=type=bind,from=stage-keys,src=/keys,dst=/tmp/keys mkdir -p /usr/etc/pki/containers/ && cp /tmp/keys/* /usr/et 0.0s
=> CACHED [stage-bins 1/3] COPY --from=gcr.io/projectsigstore/cosign /ko-app/cosign /bins/cosign 0.0s
=> CACHED [stage-bins 2/3] COPY --from=docker.io/mikefarah/yq /usr/bin/yq /bins/yq 0.0s
=> CACHED [stage-bins 3/3] COPY --from=ghcr.io/blue-build/cli:main-installer /out/bluebuild /bins/bluebuild 0.0s
=> CACHED [stage-4 3/16] RUN --mount=type=bind,from=stage-bins,src=/bins,dst=/tmp/bins mkdir -p /usr/bin/ && cp /tmp/bins/* /usr/bin/ && ostree 0.0s
=> CACHED [stage-4 4/16] RUN --mount=type=tmpfs,target=/var --mount=type=bind,from=stage-config,src=/config,dst=/tmp/config,rw --mount=type=bind 0.0s
=> CACHED [stage-4 5/16] RUN --mount=type=tmpfs,target=/var --mount=type=bind,from=stage-config,src=/config,dst=/tmp/config,rw --mount=type=bind 0.0s
=> CACHED [stage-4 6/16] RUN --mount=type=tmpfs,target=/var --mount=type=bind,from=stage-config,src=/config,dst=/tmp/config,rw --mount=type=bind 0.0s
=> CACHED [stage-4 7/16] RUN --mount=type=tmpfs,target=/var --mount=type=bind,from=stage-config,src=/config,dst=/tmp/config,rw --mount=type=bind 0.0s
=> CACHED [stage-4 8/16] RUN --mount=type=tmpfs,target=/var --mount=type=bind,from=stage-config,src=/config,dst=/tmp/config,rw --mount=type=bind 0.0s
=> CACHED [stage-4 9/16] RUN --mount=type=tmpfs,target=/var --mount=type=bind,from=stage-config,src=/config,dst=/tmp/config,rw --mount=type=bind 0.0s
=> CACHED [stage-4 10/16] RUN --mount=type=tmpfs,target=/var --mount=type=bind,from=stage-config,src=/config,dst=/tmp/config,rw --mount=type=bind 0.0s
=> CACHED [stage-4 11/16] RUN --mount=type=tmpfs,target=/var --mount=type=bind,from=stage-config,src=/config,dst=/tmp/config,rw --mount=type=bind 0.0s
=> CACHED [stage-4 12/16] RUN --mount=type=tmpfs,target=/var --mount=type=bind,from=stage-config,src=/config,dst=/tmp/config,rw --mount=type=bind 0.0s
=> CACHED [stage-4 13/16] RUN --mount=type=tmpfs,target=/var --mount=type=bind,from=stage-config,src=/config,dst=/tmp/config,rw --mount=type=bind 0.0s
=> CACHED [stage-4 14/16] RUN --mount=type=tmpfs,target=/var --mount=type=bind,from=stage-config,src=/config,dst=/tmp/config,rw --mount=type=bind 0.0s
=> [stage-4 15/16] RUN --mount=type=tmpfs,target=/var --mount=type=bind,from=stage-config,src=/config,dst=/tmp/config,rw --mount=type=bind,from= 33.4s
=> [stage-4 16/16] RUN --mount=type=tmpfs,target=/var --mount=type=bind,from=stage-config,src=/config,dst=/tmp/config,rw --mount=type=bind,from=s 0.7s
```
Support was also added to put all build files into `./files/` instead of
`./config/`. This is an all or nothing operation, meaning if there
exists a directory of `files` then the `config` directory will be
completely ignored. Work will have to be done in
https://github.com/blue-build/modules to allow users to put their files
directly in `./files/` and not `./files/files` for the `files` module or
`./files/scripts` for the scripts module.
Support was also added to move the `./config/containerfiles/` directory
to the root of the project. Now the directories you can find in the root
of projects are:
```
files/
containerfiles/
recipes/
```
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