Expand multiple build capabilities

Containerfile.j

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+# This is the Containerfile for your custom image. 
+
+# It takes in the recipe, version, and base image as arguments,
+# all of which are provided by build.yml when doing builds
+# in the cloud. The ARGs have default values, but changing those
+# does nothing if the image is built in the cloud.
+
+ARG FEDORA_MAJOR_VERSION=38
+# Warning: changing this might not do anything for you. Read comment above.
+ARG BASE_IMAGE_URL=ghcr.io/ublue-os/kinoite-main
+
+FROM ${BASE_IMAGE_URL}:${FEDORA_MAJOR_VERSION}
+
+ARG USR_DIR=usr-j
+
+# The default recipe set to the recipe's default filename
+# so that `podman build` should just work for many people.
+ARG RECIPE=recipe-framework-13.yml
+
+# Copy static configurations and component files.
+# Warning: If you want to place anything in "/etc" of the final image, you MUST
+# place them in "./usr/etc" in your repo, so that they're written to "/usr/etc"
+# on the final system. That is the proper directory for "system" configuration
+# templates on immutable Fedora distros, whereas the normal "/etc" is ONLY meant
+# for manual overrides and editing by the machine's admin AFTER installation!
+# See issue #28 (https://github.com/ublue-os/startingpoint/issues/28).
+COPY usr-common/ /usr
+COPY ${USR_DIR}/ /usr
+
+# Copy the recipe that we're building.
+COPY ${RECIPE} /usr/share/ublue-os/recipe.yml
+
+# "yq" used in build.sh and the "setup-flatpaks" just-action to read recipe.yml.
+# Copied from the official container image since it's not available as an RPM.
+COPY --from=docker.io/mikefarah/yq /usr/bin/yq /usr/bin/yq
+
+# Install cosign for verifying signatures for images.
+COPY --from=gcr.io/projectsigstore/cosign /ko-app/cosign /usr/bin/cosign
+
+# Install xboxdrv for the Xbox 360 controller.
+COPY --from=registry.gitlab.com/wunker-bunker/xboxdrv-docker /usr/local/bin/xboxdrv /usr/bin/xboxdrv
+COPY --from=registry.gitlab.com/wunker-bunker/xboxdrv-docker /usr/local/bin/xboxdrvctl /usr/bin/xboxdrvctl
+COPY --from=registry.gitlab.com/wunker-bunker/xboxdrv-docker /usr/local/share/man/man1/xboxdrv.1 /usr/share/man/man1/xboxdrv.1
+
+# Copy the build script and all custom scripts.
+COPY scripts /tmp/scripts
+
+# Run the build script, then clean up temp files and finalize container build.
+RUN chmod +x /tmp/scripts/build.sh && \
+        /tmp/scripts/build.sh && \
+        rm -rf /tmp/* /var/* && \
+        ostree container commit