Add pre-installation of missing SDK parts to Github Actions

.github/workflows/android-build.yml

@@ -16,6 +16,8 @@ jobs:
         uses: actions/setup-java@v1
         with:
           java-version: 11
+      - name: Install Android SDK with pieces Gradle skips
+        run: ./automation/iceraven/install-sdk.sh
       - name: Create version name
         run: echo "VERSION_NAME=$(git describe --tags HEAD)" >> $GITHUB_ENV
       - name: Build forkRelease variant of app

automation/iceraven/install-sdk.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+# Install the Android SDK and all the parts Gradle doesn't figure out to install itself
+
+# Install the SDK
+mkdir -p $HOME/android-sdk/android-sdk-linux
+pushd $HOME/android-sdk/android-sdk-linux
+mkdir -p licenses
+echo "8933bad161af4178b1185d1a37fbf41ea5269c55" >> licenses/android-sdk-license
+echo "d56f5187479451eabf01fb78af6dfcb131a6481e" >> licenses/android-sdk-license
+echo "24333f8a63b6825ea9c5514f83c2829b004d1fee" >> licenses/android-sdk-license
+if [ ! -e cmdline-tools ] ; then
+    mkdir -p cmdline-tools
+    pushd cmdline-tools
+    wget "$(curl -s https://developer.android.com/studio | grep -oP "https://dl.google.com/android/repository/commandlinetools-linux-[0-9]+_latest.zip")"
+    unzip commandlinetools-linux-*_latest.zip
+    popd
+fi
+popd
+export ANDROID_SDK_ROOT=$HOME/android-sdk/android-sdk-linux/
+
+# Install the weirdly missing NDK
+${ANDROID_SDK_ROOT}/cmdline-tools/tools/bin/sdkmanager "ndk;21.3.6528147"
+
+# Point the build at the tools
+echo "sdk.dir=${ANDROID_SDK_ROOT}" >> local.properties