Add github workflow (#4)

.github/workflows/build.yml

@@ -0,0 +1,22 @@
+name: Build
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Build
+        run: |
+          sh build.sh divinus-musl
+          sh build.sh divinus-muslhf
+          sh build.sh divinus-glibc

build.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 DL="https://github.com/openipc/firmware/releases/download/latest"
 
 toolchain() {