feat: download RPM metadata in build stage to lower bandwidth usage i…

…n final stage (#65)

README.md

@@ -131,19 +131,30 @@ A container build can be invoked by simply running:
 
 ```
 $ podman build \
-    --file Containerfile \
+    --file build.Containerfile \
     --tag build-test:latest
+$ podman build \
+    --file install.Containerfile \
+    --tag install-test:latest
 ```
 
 Or to specify the version of Fedora and/or Nvidia driver:
 
 ```
 $ podman build \
     --build-arg IMAGE_NAME=silverblue \
-    --build-arg SOURCE_IMAGE=silverblue \
     --build-arg FEDORA_MAJOR_VERSION=37 \
     --build-arg NVIDIA_MAJOR_VERSION=525 \
-    --file Containerfile \
+    --file build.Containerfile \
+    --tag build-test:37-525
+
+$ podman build \
+    --build-arg IMAGE_NAME=silverblue \
+    --build-arg FEDORA_MAJOR_VERSION=37 \
+    --build-arg NVIDIA_MAJOR_VERSION=525 \
+    --build-arg AKMODS_CACHE=build-test \
+    --build-arg AKMODS_VERSION=37 \
+    --file install.Containerfile \
     --tag build-test:latest
 ```
 

build.Containerfile

@@ -17,6 +17,9 @@ ADD ublue-os-nvidia-addons.spec /tmp/ublue-os-nvidia-addons/ublue-os-nvidia-addo
 ADD https://nvidia.github.io/nvidia-docker/rhel9.0/nvidia-docker.repo \
     /tmp/ublue-os-nvidia-addons/rpmbuild/SOURCES/nvidia-container-runtime.repo
 
+ADD https://nvidia.github.io/nvidia-docker/rhel9.0/nvidia-docker.repo \
+    /etc/yum.repos.d/nvidia-container-runtime.repo
+
 ADD files/etc/nvidia-container-runtime/config-rootless.toml \
     /tmp/ublue-os-nvidia-addons/rpmbuild/SOURCES/config-rootless.toml
 ADD https://raw.githubusercontent.com/NVIDIA/dgx-selinux/master/bin/RHEL9/nvidia-container.pp \

install.Containerfile

@@ -1,19 +1,15 @@
-ARG IMAGE_NAME="${IMAGE_NAME:-silverblue}"
-ARG BASE_IMAGE="ghcr.io/ublue-os/${IMAGE_NAME}-main"
-ARG FEDORA_MAJOR_VERSION="${FEDORA_MAJOR_VERSION:-37}"
-ARG NVIDIA_MAJOR_VERSION="${NVIDIA_MAJOR_VERSION:-525}"
-ARG AKMODS_VERSION="${AKMODS_VERSION:-37}"
+ARG IMAGE_NAME=silverblue
+ARG BASE_IMAGE=ghcr.io/ublue-os/${IMAGE_NAME}-main
+ARG FEDORA_MAJOR_VERSION=37
 
 FROM ${BASE_IMAGE}:${FEDORA_MAJOR_VERSION}
 
-ARG FEDORA_MAJOR_VERSION="${FEDORA_MAJOR_VERSION}"
-ARG NVIDIA_MAJOR_VERSION="${NVIDIA_MAJOR_VERSION}"
-ARG AKMODS_VERSION="${AKMODS_VERSION}"
-
-ARG BUILDER_IMAGE="ghcr.io/ublue-os/akmods-nvidia:${AKMODS_VERSION}-${NVIDIA_MAJOR_VERSION}"
 ARG IMAGE_NAME="${IMAGE_NAME}"
+ARG AKMODS_CACHE="ghcr.io/ublue-os/akmods-nvidia"
+ARG AKMODS_VERSION="37"
+ARG NVIDIA_MAJOR_VERSION="525"
 
-COPY --from=${BUILDER_IMAGE} / .
+COPY --from=${AKMODS_CACHE}:${AKMODS_VERSION}-${NVIDIA_MAJOR_VERSION} / .
 
 COPY install.sh /tmp/install.sh
 COPY post-install.sh /tmp/post-install.sh