[DNM, WIP] ci: migrate .drone.yml to github build action

Signed-off-by: Tim Serong <[email protected]>

.github/workflows/build.yml

@@ -0,0 +1,38 @@
+name: build
+on:
+  push:
+    branches:
+    - master
+    - v*
+  pull_request:
+env:
+  # Fake up DRONE_BRANCH so it's picked up when dapper gets to scripts/version
+  DRONE_BRANCH: ${{ github.ref_name }}
+jobs:
+  build-amd64-iso:
+    name: Build AMD64 ISO
+    runs-on: repo--harvester--harvester-installer--amd64
+    container:
+      image: registry.suse.com/bci/golang:1.21
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Run CI
+      run: scripts/ci
+
+  # build-arm64-iso:
+  #   name: Build ARM64 ISO
+  #   runs-on: repo--harvester--harvester-installer--arm64
+  #   container:
+  #     image: rancher/dapper:v0.5.8
+  #   steps:
+  #   # Git is not in Dapper container image. Add it manually for dirty check.
+  #   - name: Add Git
+  #     run: apk add -U git
+
+  #   - name: Checkout code
+  #     uses: actions/checkout@v4
+
+  #   - name: Run dapper ci
+  #     run: dapper ci