add ci

.github/workflows/ubuntu_arm64.yml

@@ -0,0 +1,33 @@
+name: Ubuntu (Arm64)
+
+on:
+  pull_request:
+  push:
+  release:
+    types: [published]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    concurrency:
+        group: ${{ github.ref }}-${{ github.base_ref }}-${{ github.head_ref }}-UbuntuArm64
+        cancel-in-progress: true
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: true
+
+      - run: |
+          docker run --rm --privileged multiarch/qemu-user-static:register --reset
+
+      - uses: docker://multiarch/ubuntu-core:arm64-bionic
+        with:
+          args: >
+            bash -c
+            "uname -a &&
+            apt update &&
+            cd /github/workspace &&
+            ./configure &&
+            make && make run"
+