diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c6988a11f..9963bbe95 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -4,118 +4,11 @@ on: push
 
 jobs:
 
-  cache:
-    name: Cache
-    runs-on: ubuntu-22.04
+  test:
+    name: Test runner
+    runs-on: [self-hosted, sb-codesign]
     steps:
-      - name: Cache permissions
+      - name: Hello world
         run: |
-          sudo chown $(id -un) /var/cache/apt/archives
-      - name: Cache packages
-        uses: actions/cache@v4
-        with:
-          path: /var/cache/apt/archives/*.deb
-          key: apt-cache-${{ github.run_id }}-${{ github.run_attempt }}
-          restore-keys: |
-            apt-cache-
-      - name: Download packages
-        run: |
-          sudo apt update
-          sudo apt install -y -d -o Acquire::Retries=50 \
-                           mtools syslinux isolinux \
-                           libc6-dev-i386 valgrind \
-                           gcc-arm-none-eabi gcc-aarch64-linux-gnu
-
-  x86:
-    name: x86
-    runs-on: ubuntu-22.04
-    needs: cache
-    steps:
-      - name: Check out code
-        uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-      - name: Cache permissions
-        run: |
-          sudo chown $(id -un) /var/cache/apt/archives
-      - name: Cache packages
-        uses: actions/cache/restore@v4
-        with:
-          path: /var/cache/apt/archives/*.deb
-          key: apt-cache-${{ github.run_id }}-${{ github.run_attempt }}
-      - name: Install packages
-        run: |
-          sudo dpkg --add-architecture i386
-          sudo apt update
-          sudo apt install -y -o Acquire::Retries=50 \
-                           mtools syslinux isolinux \
-                           libc6-dev-i386 valgrind \
-                           libgcc-s1:i386 libc6-dbg:i386
-      - name: Build (BIOS)
-        run: |
-          make -j 4 -C src
-      - name: Build (Everything)
-        run: |
-          make -j 4 -C src everything
-      - name: Test
-        run: |
-          valgrind ./src/bin-i386-linux/tests.linux
-          valgrind ./src/bin-x86_64-linux/tests.linux
-
-  arm32:
-    name: ARM32
-    runs-on: ubuntu-22.04
-    needs: cache
-    steps:
-      - name: Check out code
-        uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-      - name: Cache permissions
-        run: |
-          sudo chown $(id -un) /var/cache/apt/archives
-      - name: Cache packages
-        uses: actions/cache/restore@v4
-        with:
-          path: /var/cache/apt/archives/*.deb
-          key: apt-cache-${{ github.run_id }}-${{ github.run_attempt }}
-      - name: Install packages
-        run: |
-          sudo apt update
-          sudo apt install -y -o Acquire::Retries=50 \
-                           mtools syslinux isolinux gcc-arm-none-eabi
-      - name: Build
-        run: |
-          make -j 4 -C src CROSS=arm-none-eabi- \
-               bin-arm32-efi/intel.efi \
-               bin-arm32-efi/intel.usb \
-               bin-arm32-efi/intel.iso
-
-  arm64:
-    name: ARM64
-    runs-on: ubuntu-22.04
-    needs: cache
-    steps:
-      - name: Check out code
-        uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-      - name: Cache permissions
-        run: |
-          sudo chown $(id -un) /var/cache/apt/archives
-      - name: Cache packages
-        uses: actions/cache/restore@v4
-        with:
-          path: /var/cache/apt/archives/*.deb
-          key: apt-cache-${{ github.run_id }}-${{ github.run_attempt }}
-      - name: Install packages
-        run: |
-          sudo apt update
-          sudo apt install -y -o Acquire::Retries=50 \
-                           mtools syslinux isolinux gcc-aarch64-linux-gnu
-      - name: Build
-        run: |
-          make -j 4 -C src CROSS=aarch64-linux-gnu- \
-               bin-arm64-efi/ipxe.efi \
-               bin-arm64-efi/ipxe.usb \
-               bin-arm64-efi/ipxe.iso
+          id
+          ls -l