Add Android SDK root env

Author: jush

.github/workflows/main.yml

@@ -6,13 +6,18 @@ on:
   pull_request:
     branches: [ '**' ]
 
+env:
+  ANDROID_SDK_ROOT: /android/sdk
+
 jobs:
   build:
 #    runs-on: 'runs-on=${{ github.run_id }}/runner=maps-android-arm64/tag=mapbox-gestures-android'
     runs-on: ubuntu-latest
     container:
       image: mbgl/android-base:latest
     steps:
+      - name: Android Home
+        run: echo "ANDROID_SDK_ROOT = $ANDROID_SDK_ROOT"
       - name: Checkout repository
         uses: actions/checkout@v4