init: add build dockerfile

Signed-off-by: Han Gao <gaohan@iscas.ac.cn>

.github/workflows/ci.yml

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+name: ci
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - 'master'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - platform: linux/amd64
+            arch_name: amd64
+          - platform: linux/riscv64
+            arch_name: riscv64
+
+    steps:
+      - name: Prepare
+        run: |
+          platform=${{ matrix.platform }}
+          echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV
+          build_date=$(date "+%Y.%m.%d")
+          echo "BUILD_DATE=${build_date}" >> $GITHUB_ENV
+
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Download Rootfs
+        run: |
+          #wget https://cloud-images.ubuntu.com/noble/current/noble-server-cloudimg-${{ matrix.arch_name }}-root.tar.xz
+          wget -o ${{ matrix.arch_name }}.tar.xz \
+            https://cloud-images.ubuntu.com/mantic/current/mantic-server-cloudimg-${{ matrix.arch_name }}-root.tar.xz
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to GHCR
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io/revyos
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push
+        id: build
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          platforms: ${{ matrix.platform }}
+          build-args: |
+            arch_name=${{ matrix.arch_name }}
+          tags: |
+            revyos-kernel-builder:${{ matrix.arch_name }}-${{ env.BUILD_DATE }}

Dockerfile

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+FROM scratch
+
+LABEL org.opencontainers.image.authors="gaohan@iscas.ac.cn"
+
+ARG arch_name
+
+ADD ${arch_name}.tar.xz /
+
+RUN apt update && \
+    apt install -y gdisk dosfstools build-essential \
+                                  libncurses-dev gawk flex bison openssl libssl-dev tree \
+                                  dkms libelf-dev libudev-dev libpci-dev libiberty-dev autoconf device-tree-compiler \
+                                  devscripts pahole bc rsync bash wget cpio sudo python-is-python3
+
+RUN apt install -y nodejs
+
+RUN ln -sf /bin/bash /bin/sh
+
+CMD [ "/bin/bash" ]