Add support for PXE booting Kubernetes nodes

.github/workflows/buildroot-container.yml

@@ -20,7 +20,7 @@ jobs:
         fetch-depth: 0
     - name: Build Container
       run: |
-        docker build UET/Lib/Container/rkm-initrd-builder -f UET/Lib/Container/rkm-initrd-builder/prebuilt.Dockerfile --tag ghcr.io/redpointgames/uet/buildroot-prebuilt-base:latest
+        docker build UET/Lib/Container/rkm-initrd-builder -f UET/Lib/Container/rkm-initrd-builder/buildroot.Dockerfile --tag ghcr.io/redpointgames/uet/buildroot-prebuilt-base:latest
     - name: Log in to the Container registry
       uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
       if: github.ref == 'refs/heads/main'

.gitignore

@@ -1,3 +1,5 @@
 launchSettings.json
 *.csproj.user
-TestResults/
+TestResults/
+UET/Lib/Container/rkm-initrd-builder/static
+UET/Lib/Container/rkm-initrd-builder/storage/

UET/Lib/Container/rkm-initrd-builder/.dockerignore

@@ -0,0 +1,3 @@
+static/
+static-old/
+BuildAndCopy.ps1

UET/Lib/Container/rkm-initrd-builder/.gitignore

@@ -0,0 +1,2 @@
+static/
+!bin/

UET/Lib/Container/rkm-initrd-builder/BuildAndCopy.ps1

@@ -0,0 +1,45 @@
+param([switch] $SkipDotNet, [switch] $OnlyDotNet)
+
+if (!$SkipDotNet) {
+    Push-Location $PSScriptRoot\..\..\..\uet
+    try {
+        dotnet publish -c Release -r linux-x64
+        if ($LastExitCode -ne 0) { exit $LastExitCode }
+        dotnet publish -c Release -r win-x64
+        if ($LastExitCode -ne 0) { exit $LastExitCode }
+
+        Copy-Item -Force ".\bin\Release\net9.0\linux-x64\publish\uet" "$PSScriptRoot\static"
+        Copy-Item -Force ".\bin\Release\net9.0\win-x64\publish\uet.exe" "$PSScriptRoot\static"
+    } finally {
+        Pop-Location
+    }
+}
+
+if ($OnlyDotNet) {
+    exit 0
+}
+
+Push-Location $PSScriptRoot
+try {
+    docker build . -f .\copy.Dockerfile --tag copy-buildroot
+    if ($LastExitCode -ne 0) { exit $LastExitCode }
+
+    $ContainerId = $(docker run --rm --detach copy-buildroot)
+    $ContainerId = $ContainerId.Trim()
+
+    docker cp "${ContainerId}:/static/vmlinuz" static/vmlinuz
+    if ($LastExitCode -ne 0) { exit $LastExitCode }
+    docker cp "${ContainerId}:/static/initrd" static/initrd
+    if ($LastExitCode -ne 0) { exit $LastExitCode }
+    docker cp "${ContainerId}:/static/ipxe.efi" static/ipxe.efi
+    if ($LastExitCode -ne 0) { exit $LastExitCode }
+    docker cp "${ContainerId}:/static/wimboot" static/wimboot
+    if ($LastExitCode -ne 0) { exit $LastExitCode }
+    docker cp "${ContainerId}:/static/background.png" static/background.png
+    if ($LastExitCode -ne 0) { exit $LastExitCode }
+
+    docker stop -t 0 $ContainerId
+    if ($LastExitCode -ne 0) { exit $LastExitCode }
+} finally {
+    Pop-Location
+}

UET/Lib/Container/rkm-initrd-builder/br2-external/Config.in

@@ -1 +1,2 @@
+source "$BR2_EXTERNAL_REDPOINT_PATH/package/wimlib/Config.in"
 source "$BR2_EXTERNAL_REDPOINT_PATH/package/wine64/Config.in"

UET/Lib/Container/rkm-initrd-builder/br2-external/package/wimlib/Config.in

@@ -0,0 +1,4 @@
+config BR2_PACKAGE_WIMLIB
+	bool "wimlib"
+	select BR2_PACKAGE_NTFS_3G
+	select BR2_PACKAGE_LIBFUSE3

UET/Lib/Container/rkm-initrd-builder/br2-external/package/wimlib/wimlib.hash

@@ -0,0 +1 @@
+sha256  3633db2b6c8b255eb86d3bf3df3059796bd1f08e50b8c9728c7eb66662e51300  wimlib-1.14.4.tar.gz

UET/Lib/Container/rkm-initrd-builder/br2-external/package/wimlib/wimlib.mk

@@ -0,0 +1,26 @@
+################################################################################
+#
+# wimlib
+#
+################################################################################
+
+WIMLIB_VERSION = 1.14.4
+WIMLIB_SOURCE = wimlib-1.14.4.tar.gz
+WIMLIB_SITE = https://wimlib.net/downloads
+WIMLIB_LICENSE = GPL3
+WIMLIB_DEPENDENCIES = ntfs-3g libfuse3
+
+#define WIMLIB_CONFIGURE_CMDS
+#	:
+#endef
+
+#define WIMLIB_BUILD_CMDS
+#	$(TARGET_MAKE_ENV) EXTRA_CFLAGS="-I $(HOST_DIR)/include/freetype2 -I $(HOST_DIR)/include" EXTRA_LDFLAGS="-L $(HOST_DIR)/lib" make $(WIMLIB_MAKE_OPTS) -C $(@D)
+#endef
+
+#define WIMLIB_INSTALL_TARGET_CMDS
+#	strip $(@D)/fbtextdemo
+#	$(INSTALL) -D -m 755 $(@D)/fbtextdemo $(TARGET_DIR)/usr/bin
+#endef
+
+$(eval $(autotools-package))

UET/Lib/Container/rkm-initrd-builder/br2-external/package/wine64/wine64.mk

@@ -24,7 +24,7 @@ HOST_WINE64_DEPENDENCIES = host-bison host-flex
 WINE64_CONF_OPTS = \
 	--with-wine-tools=../host-wine64-$(WINE64_VERSION) \
 	--disable-tests \
-	--enable-win64 \
+	--enable-archs=i386,x86_64 \
 	--without-capi \
 	--without-coreaudio \
 	--without-gettext \

UET/Lib/Container/rkm-initrd-builder/prebuilt.Dockerfile → UET/Lib/Container/rkm-initrd-builder/buildroot.Dockerfile

@@ -2,7 +2,7 @@
 FROM ubuntu:noble AS common-deps
 
 RUN apt update
-RUN apt install -y sed make binutils build-essential diffutils gcc g++ patch gzip bzip2 perl tar cpio unzip rsync file bc findutils gawk wget libncurses-dev curl git
+RUN apt install -y sed make binutils build-essential diffutils gcc g++ patch gzip bzip2 perl tar cpio unzip rsync file bc findutils gawk wget libncurses-dev curl git gcc-mingw-w64-i686-posix gcc-mingw-w64-x86-64-posix
 
 # Build iPXE, which doesn't need to change
 FROM common-deps AS build-ipxe
@@ -27,9 +27,8 @@ RUN cd src && \
     mkdir -pv /static && \
     mv wimboot /static/wimboot
 
-# Prebuild buildroot so that we can quickly build the final image
-# with UET later.
-FROM common-deps
+# Build buildroot, for vmlinuz and initrd.
+FROM common-deps AS build-buildroot
 
 RUN mkdir /build
 WORKDIR /build
@@ -38,19 +37,30 @@ RUN curl -L -o buildroot.tar.xz https://buildroot.org/downloads/buildroot-2025.1
 RUN tar -xf buildroot.tar.xz && mv buildroot-2025.11 buildroot
 
 WORKDIR /build/buildroot
+COPY xserver_xorg-server.mk package/x11r7/xserver_xorg-server/xserver_xorg-server.mk
 COPY buildroot.config .config
 RUN mkdir output
 
 COPY br2-external /build/br2-external
 COPY kernel.config /build/kernel.config
 COPY boot-image.png /build/boot-image.png
+COPY setup.sh /build/setup.sh
+COPY files /build/files
+RUN chmod a+x /build/setup.sh
 
 ENV BR2_EXTERNAL=/build/br2-external
 
 RUN make syncconfig
-RUN bash -c 'echo -e "\n.PHONY: redpoint-target-finalize\nredpoint-target-finalize: \$(PACKAGES) \$(TARGET_DIR) host-finalize\n"' >> Makefile
-RUN make redpoint-target-finalize
+RUN make
+RUN mkdir /static
+RUN cp output/images/rootfs.cpio.zst /static/initrd && \
+    cp output/images/bzImage /static/vmlinuz
+
+# Final image just has static builds all together.
+FROM scratch
 
 COPY --from=build-ipxe /static/ipxe.efi /static/ipxe.efi
 COPY --from=build-wimboot /static/wimboot /static/wimboot
+COPY --from=build-buildroot /static/vmlinuz /static/vmlinuz
+COPY --from=build-buildroot /static/initrd /static/initrd
 COPY background.png /static/background.png