Add workflows

.gitea/workflows/build.yml

@@ -0,0 +1,47 @@
+name: Build a3270 APK
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+  workflow_dispatch:
+
+jobs:
+  build:
+    name: Build Android APK
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout a3270
+        uses: actions/checkout@v4
+
+      - name: Checkout j3270 (for lib3270j)
+        uses: actions/checkout@v4
+        with:
+          repository: rudi/j3270
+          path: j3270
+
+      - name: Set up JDK 21
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'temurin'
+          java-version: '21'
+
+      - name: Set up Android SDK
+        uses: android-actions/setup-android@v3
+
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+
+      - name: Build Debug APK
+        run: ./gradlew assembleDebug --no-daemon
+        env:
+          J3270_DIR: ${{ github.workspace }}/j3270
+
+      - name: Upload APK Artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: a3270-debug
+          path: build/outputs/apk/debug/a3270-debug.apk
+          if-no-files-found: error

README.md

@@ -9,6 +9,16 @@ An Android TN3270 terminal emulator based on `lib3270j` / `j3270`, built with Je
 
 `a3270` relies on the shared 3270 protocol library (`lib3270j`) provided by the `j3270` repository.
 
+## CI/CD & Automated Builds
+
+Automated CI/CD is configured using Gitea Actions (`.gitea/workflows/build.yml`). On every push to `main` or pull request, the workflow automatically:
+1. Clones `a3270` and `j3270` (`lib3270j`).
+2. Configures JDK 21 and the Android SDK.
+3. Builds the debug APK (`a3270-debug.apk`).
+4. Uploads the resulting APK as a downloadable workflow artifact (`a3270-debug`).
+
+You can download pre-built APKs directly from the **Actions** tab of the repository on Gitea.
+
 ## Prerequisites
 
 - **Java Development Kit (JDK)**: JDK 17 or JDK 21