actions: use ubuntu runs

我記錯了，是 Windows 才兩倍份額，而且還沒 Ubuntu 快(

.github/workflows/build.yml

@@ -9,7 +9,7 @@ on:
 jobs:
   build:
     name: 構建
-    runs-on: windows-latest
+    runs-on: ubuntu-latest
     env:
       CCACHE_COMPILERCHECK: '%compiler% -dumpmachine; %compiler% -dumpversion'
       CCACHE_NOHASHDIR: 'true'
@@ -22,27 +22,26 @@ jobs:
       with:
         ref: ${{ github.sha }}
         submodules: 'recursive'
-        fetch-depth: 0 
+        fetch-depth: 0
 
     - name: 設定快取
       uses: actions/cache@v4
       with:
-        path: $env:USERPROFILE\.ccache
+        path: ~/.ccache
         key: ${{ runner.os }}-ccache-${{ github.sha }}
         restore-keys: |
           ${{ runner.os }}-ccache-
 
     - name: 如果需要，則寫入簽名密鑰
       if: github.ref == 'refs/heads/master' && github.event_name != 'pull_request'
-      shell: powershell
       run: |
-        if (-not [string]::IsNullOrEmpty("${{ secrets.KEY_STORE }}")) {
-          "androidStorePassword='${{ secrets.KEY_STORE_PASSWORD }}'" | Out-File -Append -FilePath gradle.properties
-          "androidKeyAlias='${{ secrets.ALIAS }}'" | Out-File -Append -FilePath gradle.properties
-          "androidKeyPassword='${{ secrets.KEY_PASSWORD }}'" | Out-File -Append -FilePath gradle.properties
-          "androidStoreFile='key.jks'" | Out-File -Append -FilePath gradle.properties
-          [System.Convert]::FromBase64String("${{ secrets.KEY_STORE }}") | Set-Content -Path key.jks -Encoding Byte
-        }
+        if [ ! -z "${{ secrets.KEY_STORE }}" ]; then
+          echo androidStorePassword='${{ secrets.KEY_STORE_PASSWORD }}' >> gradle.properties
+          echo androidKeyAlias='${{ secrets.ALIAS }}' >> gradle.properties
+          echo androidKeyPassword='${{ secrets.KEY_PASSWORD }}' >> gradle.properties
+          echo androidStoreFile='key.jks' >> gradle.properties
+          echo ${{ secrets.KEY_STORE }} | base64 --decode > key.jks
+        fi
 
     - name: 檢出 libxposed/api
       uses: actions/checkout@main
@@ -72,56 +71,53 @@ jobs:
     - name: 設定 ninja
       uses: seanmiddleditch/gha-setup-ninja@master
       with:
-        version: 1.12.0
+        version: 1.12.1
 
     - name: 移除 Android 的 cmake
-      shell: powershell
-      run: Remove-Item -Path "$env:ANDROID_HOME\cmake" -Recurse -Force -ErrorAction SilentlyContinue
+      shell: bash
+      run: rm -rf "$ANDROID_HOME/cmake"
 
     - name: 設定構建環境
-      shell: powershell
       run: |
         # for libxposed/api build
-        "org.gradle.jvmargs=-Xmx2048m" | Out-File -Append -FilePath libxposed/api/gradle.properties
+        echo 'org.gradle.jvmargs=-Xmx2048m' >> libxposed/api/gradle.properties
 
         # for main project build
-        "org.gradle.parallel=true" | Out-File -Append -FilePath gradle.properties
-        "org.gradle.jvmargs=-Xmx2048m" | Out-File -Append -FilePath gradle.properties
-        "android.native.buildOutput=verbose" | Out-File -Append -FilePath gradle.properties
+        {
+          echo 'org.gradle.parallel=true'
+          echo 'org.gradle.jvmargs=-Xmx2048m'
+          echo 'android.native.buildOutput=verbose'
+        } >> gradle.properties
 
-        # for libxposed dependencies build
-        "org.gradle.jvmargs=-Xmx2048m" | Out-File -Append -FilePath libxposed/service/gradle.properties
+        # for libxposed build
+        echo 'org.gradle.jvmargs=-Xmx2048m' >> libxposed/api/gradle.properties
+        echo 'org.gradle.jvmargs=-Xmx2048m' >> libxposed/service/gradle.properties
 
     - name: 授予 gradlew 執行權限
       run: chmod +x gradlew
 
     - name: 使用 Gradle 構建依賴項
       working-directory: libxposed
-      shell: powershell
       run: |
         cd api
-        "org.gradle.jvmargs=-Xmx2048m" | Out-File -Append -FilePath gradle.properties
-        .\gradlew.bat :api:publishApiPublicationToMavenLocal
-        
+        echo 'org.gradle.jvmargs=-Xmx2048m' >> gradle.properties
+        ./gradlew :api:publishApiPublicationToMavenLocal
         cd ../service
-        "org.gradle.jvmargs=-Xmx2048m" | Out-File -Append -FilePath gradle.properties
-        .\gradlew.bat :interface:publishInterfacePublicationToMavenLocal
+        echo 'org.gradle.jvmargs=-Xmx2048m' >> gradle.properties
+        ./gradlew :interface:publishInterfacePublicationToMavenLocal
 
     - name: 設定 commit id
-      shell: powershell
-      run: |
-        $commit = "${{ github.sha }}".Substring(0, 7)
-        echo "commit=$commit" | Out-File -FilePath $env:GITHUB_ENV -Append
+      run: echo "commit=$(echo ${{ github.sha }} | cut -c-7)" > $GITHUB_ENV
 
     - name: 使用 Gradle 構建
-      run: .\gradlew.bat buildAll
+      run: ./gradlew buildAll
 
     - name: 上傳 Release Artifact
       uses: actions/upload-artifact@v4
       with:
         name: npatch-release-${{ env.commit }}
         path: out/release/*
-        retention-days: 7
+        retention-days: 14
 
     - name: 上傳 Debug Artifact
       uses: actions/upload-artifact@v4