Add full offline Android Gradle Plugin dependency cache

tauri_app/docker/patch-android-sdk.sh

@@ -0,0 +1,55 @@
+#!/usr/bin/env bash
+# Align Tauri Android project with locally installed SDK (offline builds).
+set -euo pipefail
+
+ANDROID_GEN="${1:-/workspace/tauri_app/src-tauri/gen/android}"
+ANDROID_HOME="${ANDROID_HOME:-/opt/android-sdk}"
+ANDROID_SDK_ROOT="${ANDROID_SDK_ROOT:-${ANDROID_HOME}}"
+
+if [ ! -d "${ANDROID_GEN}" ]; then
+  echo "Android project not found: ${ANDROID_GEN}" >&2
+  exit 1
+fi
+
+if [ ! -d "${ANDROID_HOME}/platforms" ] && [ -d /opt/android-sdk-linux/platforms ]; then
+  ANDROID_HOME="/opt/android-sdk-linux"
+  ANDROID_SDK_ROOT="${ANDROID_HOME}"
+fi
+
+if [ ! -d "${ANDROID_HOME}/platforms" ]; then
+  echo "Android platforms not found in ${ANDROID_HOME}/platforms" >&2
+  exit 1
+fi
+
+SDK_LEVEL="$(
+  find "${ANDROID_HOME}/platforms" -mindepth 1 -maxdepth 1 -type d -name 'android-*' \
+    | sed 's|.*/android-||' \
+    | sort -n \
+    | tail -n 1
+)"
+
+if [ -z "${SDK_LEVEL}" ]; then
+  echo "Не удалось определить установленный Android SDK platform" >&2
+  exit 1
+fi
+
+APP_BUILD="${ANDROID_GEN}/app/build.gradle.kts"
+if [ -f "${APP_BUILD}" ]; then
+  sed -i -E "s/compileSdk = [0-9]+/compileSdk = ${SDK_LEVEL}/g" "${APP_BUILD}"
+  sed -i -E "s/targetSdk = [0-9]+/targetSdk = ${SDK_LEVEL}/g" "${APP_BUILD}"
+fi
+
+GRADLE_PROPS="${ANDROID_GEN}/gradle.properties"
+touch "${GRADLE_PROPS}"
+if ! grep -q '^android.builder.sdkDownload=' "${GRADLE_PROPS}"; then
+  printf '\n# Offline / isolated network: do not download SDK packages from Google\nandroid.builder.sdkDownload=false\n' >> "${GRADLE_PROPS}"
+else
+  sed -i 's/^android.builder.sdkDownload=.*/android.builder.sdkDownload=false/' "${GRADLE_PROPS}"
+fi
+
+cat > "${ANDROID_GEN}/local.properties" <<EOF
+## Autogenerated for offline Docker build. Do not commit.
+sdk.dir=${ANDROID_HOME}
+EOF
+
+echo "==> Android SDK patched: compileSdk/targetSdk=${SDK_LEVEL}, sdk.dir=${ANDROID_HOME}, sdkDownload=false"