add github action

.github/workflows/test.yaml

@@ -0,0 +1,38 @@
+name: Build and Test libc++
+on:
+  push:
+  schedule:
+    # Run nightly at 08:00 UTC (aka 00:00 Pacific, aka 03:00 Eastern)
+    - cron: '0 8 * * *'
+
+permissions:
+  contents: read # Default everything to read-only
+
+env:
+
+
+jobs:
+  job1:
+    runs-on: ubuntu-latest
+    strategy:
+      #fail-fast: false
+      #matrix:
+      #  config: [
+      #    'generic-cxx03',
+      #    'generic-cxx26',
+      #    'generic-modules'
+      #  ]
+      #  cc: [  'clang-19' ]
+      #  cxx: [ 'clang++-19' ]
+      #  include:
+      #    - config: 'generic-gcc'
+      #      cc: 'gcc-14'
+      #      cxx: 'g++-14'
+    steps:
+      - uses: actions/checkout@v4
+      - name: checkout and build
+        run: ./ci/run.sh 
+        #libcxx/utils/ci/run-buildbot ${{ matrix.config }}
+        #env:
+        #  CC: ${{ matrix.cc }}
+        #  CXX: ${{ matrix.cxx }}

ci/run.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+echo "Running ./docker/setup-llvm.sh"
+sudo ./docker/setup-llvm.sh
+echo "Running ./docker/setup-deps.sh"
+sudo ./docker/setup-deps.sh
+echo "Running ./docker/setup-build.sh"
+sudo ./docker/setup-build.sh