Workflow error correction

.gitea/workflows/build.yml

@@ -81,11 +81,35 @@ jobs:
           flutter-version: "3.41.9"
           cache: true
 
+      - name: Set up Android SDK
+        uses: android-actions/setup-android@v3
+
+      - name: Install Android SDK packages
+        shell: bash
+        run: |
+          set -euo pipefail
+          run_sdkmanager() {
+            set +e
+            yes | sdkmanager "$@"
+            local status="${PIPESTATUS[1]}"
+            set -e
+            return "$status"
+          }
+
+          run_sdkmanager --install \
+            "platform-tools" \
+            "platforms;android-36" \
+            "build-tools;36.0.0" \
+            "cmdline-tools;latest"
+          run_sdkmanager --licenses >/dev/null
+          flutter config --android-sdk "$ANDROID_HOME"
+
       - name: Check build environment
         shell: bash
         run: |
           set -euo pipefail
           df -h
+          echo "ANDROID_HOME=$ANDROID_HOME"
           java -version
           flutter --version
           flutter doctor -v