refactor: Move modules into their own directory structure (#80)

This separates out the module template logic so that it is easier to
undertstand what each section does. This will also allow creating in
repo documentation for any special modules that don't use a bash base.

templates/Containerfile.j2

@@ -0,0 +1,59 @@
+{%- let os_version = recipe.get_os_version() %}
+# This stage is responsible for holding onto
+# your config without copying it directly into
+# the final image
+FROM scratch as stage-config
+COPY ./config /config
+
+# Copy modules
+# The default modules are inside ublue-os/bling
+# Custom modules overwrite defaults
+FROM scratch as stage-modules
+COPY --from=ghcr.io/ublue-os/bling:latest /modules /modules
+{%- if self::modules_exists() %}
+COPY ./modules /modules
+{%- endif %}
+
+{%- include "modules/akmods/akmods.j2" %}
+
+# This stage is responsible for holding onto
+# exports like the exports.sh
+FROM docker.io/alpine as stage-exports
+RUN printf {{ export_script.print_script() }} >> /exports.sh && chmod +x /exports.sh
+
+FROM {{ recipe.base_image }}:{{ recipe.image_version }}
+
+LABEL {{ crate::constants::BUILD_ID_LABEL }}="{{ build_id }}"
+LABEL org.opencontainers.image.title="{{ recipe.name }}"
+LABEL org.opencontainers.image.description="{{ recipe.description }}"
+LABEL io.artifacthub.package.readme-url=https://raw.githubusercontent.com/blue-build/cli/main/README.md
+
+ARG RECIPE={{ recipe_path.display() }}
+
+{%- if let Some(repo_owner) = self::get_github_repo_owner() %}
+ARG IMAGE_REGISTRY=ghcr.io/{{ repo_owner }}
+{%- else if let Some(registry) = self::get_gitlab_registry_path() %}
+ARG IMAGE_REGISTRY={{ registry }}
+{%- else %}
+ARG IMAGE_REGISTRY=localhost
+{%- endif %}
+
+{%- if self::has_cosign_file() %}
+COPY cosign.pub /usr/share/ublue-os/cosign.pub
+{%- endif %}
+
+ARG CONFIG_DIRECTORY="/tmp/config"
+ARG IMAGE_NAME="{{ recipe.name }}"
+ARG BASE_IMAGE="{{ recipe.base_image }}"
+
+{%- include "modules/modules.j2" %}
+
+COPY --from=gcr.io/projectsigstore/cosign /ko-app/cosign /usr/bin/cosign
+COPY --from=ghcr.io/blue-build/cli:
+{%- if let Some(tag) = recipe.blue_build_tag -%}
+{{ tag }}
+{%- else -%}
+latest-installer
+{%- endif %} /out/bluebuild /usr/bin/bluebuild
+
+RUN ostree container commit