add aarch64

.github/workflows/Build_SDImage_aarch64.yml

@@ -0,0 +1,40 @@
+name: Build OS Image - AARCH64
+on:
+  workflow_dispatch:
+
+jobs:
+  build-default-image:
+    name: Build OS image - AARCH64
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v2.3.4
+
+      - uses: cachix/install-nix-action@v13
+        with:
+          # Pin because the latest all-hardware profile changes
+          # https://github.com/NixOS/nixpkgs/pull/128532
+          nix_path: nixpkgs=https://github.com/NixOS/nixpkgs/archive/c23146505c35a07bafbecf36af4f9ebde2bb7dfd.tar.gz
+          extra_nix_config: |
+            extra-platforms = aarch64-linux
+
+
+      - run: |
+          sudo apt -y install qemu-user-static
+
+      - name: Test binfmt
+        run: |
+          cat /proc/sys/fs/binfmt_misc/qemu-aarch64
+          /usr/bin/qemu-aarch64-static --version
+
+      - name: Build SD Image
+        run: |
+          nix-build '<nixpkgs/nixos>'  \
+            -A config.system.build.sdImage \
+            -I nixos-config=./sd-image_aarch64.nix \
+            --argstr system aarch64-linux \
+            --option sandbox false
+
+      - uses: actions/upload-artifact@v2
+        with:
+          name: sd-image_aarch64.img
+          path: ./result/sd-image/*.img*

sd-image_aarch64.nix

@@ -0,0 +1,9 @@
+{ ... }: {
+  imports = [
+    <nixpkgs/nixos/modules/installer/sd-card/sd-image-aarch64.nix>
+  ];
+  # put your own configuration here, for example ssh keys:
+  users.users.root.openssh.authorizedKeys.keys = [
+     "ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAwn26AL26A0Yt4sE+rm5//p8QKuNGI/ezAdNJX9QAjRErjEWnsiUr+w0O78912A2RCakdZYZJo6p1RuLYq6u27mjdLU1hhJs1t/ZFUjevKP33Q8hjptnV3s/G/iPfl0h4kQDStNySgJJ7cGh8Dhj906BrQbns3U2WgVZWwhaYvFiSjZA9UWwvB+n/jN9YeSShfdqGYw8/WlFZiOZrz4poO6/DUOAiztvzrpaQFDtI2f9TdGL1ttvYk04jDCRO1cM1LjgWir+WToalgyAqxfgnlvbv8g16RQo//8qhRdMqQPJKnIRewy/VLN1VbNbO2+z5f6BYbYlfioDXmuzMb86jfQ=="
+  ];
+}