Introduce CI Container and Optimize Workflows

.ci/container/Dockerfile

@@ -0,0 +1,97 @@
+FROM ubuntu:24.04
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+# Install basics and tools
+RUN apt-get update && apt-get install -y \
+    curl \
+    wget \
+    gnupg \
+    ca-certificates \
+    git \
+    unzip \
+    zip \
+    python3 \
+    python3-pip \
+    xvfb \
+    libgl1-mesa-dri \
+    libxtst6 \
+    libxxf86vm1 \
+    ant \
+    maven \
+    libncurses6 \
+    libstdc++6 \
+    && rm -rf /var/lib/apt/lists/*
+
+# Setup Azul Repo
+RUN curl -s https://repos.azul.com/azul-repo.key | gpg --dearmor -o /usr/share/keyrings/azul.gpg \
+    && echo "deb [signed-by=/usr/share/keyrings/azul.gpg] https://repos.azul.com/zulu/deb stable main" | tee /etc/apt/sources.list.d/zulu.list
+
+# Install JDKs 11, 17, 21, 25
+RUN apt-get update && apt-get install -y \
+    zulu11-jdk \
+    zulu17-jdk \
+    zulu21-jdk \
+    zulu25-jdk \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install ZuluFX 8 (Tarball)
+# URL for Zulu 8 + FX (x64 Linux)
+# Using a fixed version to ensure reproducibility.
+RUN mkdir -p /usr/lib/jvm/zulu8-fx && \
+    curl -L "https://cdn.azul.com/zulu/bin/zulu8.82.0.21-ca-fx-jdk8.0.432-linux_x64.tar.gz" -o /tmp/zulu8.tar.gz && \
+    tar -xzf /tmp/zulu8.tar.gz -C /usr/lib/jvm/zulu8-fx --strip-components=1 && \
+    rm /tmp/zulu8.tar.gz
+
+# Clone cn1-binaries
+RUN git clone --depth=1 https://github.com/codenameone/cn1-binaries /opt/cn1-binaries
+
+# Set Environment Variables for JDKs (Paths for apt installed JDKs usually symlinked to /usr/lib/jvm/zulu-XX-amd64)
+ENV JAVA8_HOME=/usr/lib/jvm/zulu8-fx
+ENV JDK8_HOME=/usr/lib/jvm/zulu8-fx
+ENV JAVA11_HOME=/usr/lib/jvm/zulu11-ca-amd64
+ENV JDK11_HOME=/usr/lib/jvm/zulu11-ca-amd64
+ENV JAVA17_HOME=/usr/lib/jvm/zulu17-ca-amd64
+ENV JDK17_HOME=/usr/lib/jvm/zulu17-ca-amd64
+ENV JAVA21_HOME=/usr/lib/jvm/zulu21-ca-amd64
+ENV JDK21_HOME=/usr/lib/jvm/zulu21-ca-amd64
+ENV JAVA25_HOME=/usr/lib/jvm/zulu25-ca-amd64
+ENV JDK25_HOME=/usr/lib/jvm/zulu25-ca-amd64
+
+# Install Android SDK
+ENV ANDROID_HOME=/opt/android-sdk
+ENV ANDROID_SDK_ROOT=/opt/android-sdk
+ENV CMDLINE_TOOLS_URL="https://dl.google.com/android/repository/commandlinetools-linux-11076708_latest.zip"
+
+RUN mkdir -p ${ANDROID_HOME}/cmdline-tools && \
+    wget -q ${CMDLINE_TOOLS_URL} -O /tmp/cmdline-tools.zip && \
+    unzip -q /tmp/cmdline-tools.zip -d ${ANDROID_HOME}/cmdline-tools && \
+    mv ${ANDROID_HOME}/cmdline-tools/cmdline-tools ${ANDROID_HOME}/cmdline-tools/latest && \
+    rm /tmp/cmdline-tools.zip
+
+ENV PATH=${ANDROID_HOME}/cmdline-tools/latest/bin:${ANDROID_HOME}/platform-tools:${ANDROID_HOME}/emulator:${PATH}
+
+# Accept licenses and install packages
+# Note: sdkmanager requires Java 11+ to run. We use JAVA17_HOME for this step.
+# We dynamically locate Zulu 17 to ensure the correct path is used.
+RUN export JAVA17_REAL=$(find /usr/lib/jvm -maxdepth 1 -name "zulu*17*" -type d | head -n 1) && \
+    echo "Using JDK 17 at: $JAVA17_REAL" && \
+    yes | JAVA_HOME=$JAVA17_REAL sdkmanager --licenses && \
+    JAVA_HOME=$JAVA17_REAL sdkmanager "platform-tools" "platforms;android-31" "build-tools;31.0.0"
+
+# Set Default JAVA_HOME to Java 8 (as per user requirement for builds)
+ENV JAVA_HOME=/usr/lib/jvm/zulu8-fx
+ENV PATH=$JAVA_HOME/bin:$PATH
+
+ENV CN1_BINARIES=/opt/cn1-binaries
+
+# Verify installations
+RUN java -version && \
+    $JAVA11_HOME/bin/java -version && \
+    $JAVA17_HOME/bin/java -version && \
+    $JAVA21_HOME/bin/java -version && \
+    $JAVA25_HOME/bin/java -version && \
+    ant -version && \
+    mvn -version && \
+    python3 --version && \
+    JAVA_HOME=${JAVA17_HOME} sdkmanager --version

.github/workflows/ant.yml

@@ -7,20 +7,19 @@ on:
     paths-ignore:
       - 'CodenameOneDesigner/**'
 
+permissions:
+  contents: read
+  packages: read
+
 jobs:
   build-linux-jdk8:
 
     runs-on: ubuntu-latest
+    container:
+      image: ghcr.io/codenameone/codenameone/ci-container:latest
 
     steps:
     - uses: actions/checkout@v1
-    - name: Set up JDK 8
-      uses: actions/setup-java@v1
-      with:
-        java-version: 1.8
-        java-package: jdk
-    - name: Install dependencies
-      run: sudo apt-get update && sudo apt-get install xvfb
     - name: Build with Maven
       run: |
         cd maven

.github/workflows/build-container.yml

@@ -0,0 +1,40 @@
+name: Build CI Container
+
+on:
+  push:
+    paths:
+      - '.ci/container/**'
+      - '.github/workflows/build-container.yml'
+  workflow_dispatch:
+
+env:
+  REGISTRY: ghcr.io
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Downcase Image Name
+        run: |
+          echo "IMAGE_NAME=${GITHUB_REPOSITORY,,}/ci-container" >> ${GITHUB_ENV}
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .ci/container
+          push: true
+          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest

.github/workflows/pr.yml

@@ -32,30 +32,20 @@ permissions:
   contents: write
   pull-requests: write
   issues: write
+  packages: read
 
 jobs:
-  build-test:
+  build-linux-jdk8-fx:
 
     runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        java-version: [8, 17, 21, 25]
+    container:
+      image: ghcr.io/codenameone/codenameone/ci-container:latest
+    defaults:
+      run:
+        shell: bash
 
     steps:
     - uses: actions/checkout@v1
-    - name: Set up JDK 8
-      if: matrix.java-version == 8
-      uses: actions/setup-java@v1
-      with:
-        java-version: 1.8
-        java-package: jdk+fx
-    - name: Set up JDK
-      if: matrix.java-version != 8
-      uses: actions/setup-java@v4
-      with:
-        distribution: 'zulu'
-        java-version: ${{ matrix.java-version }}
     - name: Cache Maven dependencies
       uses: actions/cache@v4
       with:
@@ -65,30 +55,21 @@ jobs:
           ${{ runner.os }}-m2
     - name: Run Unit Tests
       run: |
-        MVN_ARGS=""
-        if [ "${{ matrix.java-version }}" != "8" ]; then
-          MVN_ARGS="-Dspotbugs.skip=true"
-        fi
         cd maven
-        mvn clean verify -DunitTests=true -pl core-unittests -am -Dmaven.javadoc.skip=true -Plocal-dev-javase $MVN_ARGS
+        mvn clean verify -DunitTests=true -pl core-unittests -am -Dmaven.javadoc.skip=true -Plocal-dev-javase
         cd ..
-    - name: Prepare Codename One binaries for Maven plugin tests
-      run: |
-        set -euo pipefail
-        rm -rf maven/target/cn1-binaries
-        git clone --depth=1 --filter=blob:none https://github.com/codenameone/cn1-binaries maven/target/cn1-binaries
     - name: Run Maven plugin tests
       working-directory: maven
       env:
-        CN1_BINARIES: ${{ github.workspace }}/maven/target/cn1-binaries
+        CN1_BINARIES: /opt/cn1-binaries
       run: |
         mvn -B -Dmaven.javadoc.skip=true \
           -DunitTests=true \
           -Dcodename1.platform=javase \
           -Dcn1.binaries="${CN1_BINARIES}" \
           -pl codenameone-maven-plugin -am -Plocal-dev-javase test
     - name: Generate static analysis HTML summaries
-      if: ${{ always() && matrix.java-version == 8 }}
+      if: ${{ always() }}
       env:
         QUALITY_REPORT_TARGET_DIRS: maven/core-unittests/target
         QUALITY_REPORT_SERVER_URL: ${{ github.server_url }}
@@ -97,7 +78,7 @@ jobs:
         QUALITY_REPORT_GENERATE_HTML_ONLY: "1"
       run: python3 .github/scripts/generate-quality-report.py
     - name: Collect quality artifacts
-      if: ${{ always() && matrix.java-version == 8 }}
+      if: ${{ always() }}
       run: |
         set -euo pipefail
         mkdir -p quality-artifacts/static-analysis
@@ -125,14 +106,14 @@ jobs:
           echo "No quality artifacts were generated." > quality-artifacts/README.txt
         fi
     - name: Upload quality artifacts
-      if: ${{ always() && matrix.java-version == 8 }}
+      if: ${{ always() }}
       id: upload-quality-artifacts
       uses: actions/upload-artifact@v4
       with:
         name: quality-artifacts
         path: quality-artifacts
     - name: Publish quality report previews
-      if: ${{ always() && matrix.java-version == 8 && github.server_url == 'https://github.com' && (github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository) }}
+      if: ${{ always() && github.server_url == 'https://github.com' && (github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository) }}
       id: publish-quality-previews
       env:
         GITHUB_TOKEN: ${{ github.token }}
@@ -198,7 +179,7 @@ jobs:
           echo "jacoco_url=${preview_base}/coverage/index.html" >> "$GITHUB_OUTPUT"
         fi
     - name: Generate quality report summary
-      if: ${{ always() && matrix.java-version == 8 }}
+      if: ${{ always() }}
       env:
         QUALITY_REPORT_TARGET_DIRS: maven/core-unittests/target
         QUALITY_REPORT_SERVER_URL: ${{ github.server_url }}
@@ -214,45 +195,30 @@ jobs:
         JACOCO_HTML_URL: ${{ steps.publish-quality-previews.outputs.jacoco_url }}
       run: python3 .github/scripts/generate-quality-report.py
     - name: Upload quality report summary
-      if: ${{ always() && matrix.java-version == 8 }}
+      if: ${{ always() }}
       uses: actions/upload-artifact@v4
       with:
         name: quality-report
         path: quality-report.md
     - name: Publish quality report comment
-      if: ${{ github.event_name == 'pull_request' && matrix.java-version == 8 }}
+      if: ${{ github.event_name == 'pull_request' }}
       uses: actions/github-script@v7
       with:
         script: |
           const { publishQualityComment } = require('./.github/scripts/publish-quality-comment.js');
           await publishQualityComment({ github, context, core });
-    - name: Install dependencies
+    - name: Link cn1-binaries
       run: |
-        sudo apt-get update && sudo apt-get install xvfb
-        wget https://github.com/codenameone/cn1-binaries/archive/refs/heads/master.zip
-        unzip master.zip -d ..
-        mv ../cn1-binaries-master ../cn1-binaries
-    - name: Build CLDC11 JAR
-      run: |
-        ANT_OPTS_ARGS=""
-        if [ "${{ matrix.java-version }}" != "8" ]; then
-          ANT_OPTS_ARGS="-Djavac.source=1.8 -Djavac.target=1.8"
-        fi
-        ant $ANT_OPTS_ARGS -noinput -buildfile Ports/CLDC11/build.xml jar
+        ln -sf $CN1_BINARIES ../cn1-binaries
     - name: Build with Ant
-      run: |
-        ANT_OPTS_ARGS=""
-        if [ "${{ matrix.java-version }}" != "8" ]; then
-          ANT_OPTS_ARGS="-Djavac.source=1.8 -Djavac.target=1.8"
-        fi
-        xvfb-run ant $ANT_OPTS_ARGS test-javase
+      run: xvfb-run ant test-javase
+    - name: Build CLDC11 JAR
+      run: ant -noinput -buildfile Ports/CLDC11/build.xml jar
 
     - name: Build Release
-      if: matrix.java-version == 8
       run: ant -noinput -buildfile CodenameOne/build.xml weeklyLibUpdate
 
     - name: Build JavaDocs
-      if: matrix.java-version == 8
       run: |
         cd CodenameOne
         mkdir -p build
@@ -267,18 +233,12 @@ jobs:
         cd ..
 
     - name: Build iOS Port
-      run: |
-        ANT_OPTS_ARGS=""
-        if [ "${{ matrix.java-version }}" != "8" ]; then
-          ANT_OPTS_ARGS="-Djavac.source=1.8 -Djavac.target=1.8"
-        fi
-        ant $ANT_OPTS_ARGS -noinput -buildfile Ports/iOSPort/build.xml jar
+      run: ant -noinput -buildfile Ports/iOSPort/build.xml jar
 
     - name: Build iOS VM API
       run: mvn -f vm/JavaAPI/pom.xml package
 
     - name: Upload a Build Artifact
-      if: matrix.java-version == 8
       uses: actions/upload-artifact@v4
       with:
         name: JavaAPI.jar
@@ -288,41 +248,27 @@ jobs:
       run: mvn -f vm/ByteCodeTranslator/pom.xml package
 
     - name: Build CLDC 11 VM
-      run: |
-        ANT_OPTS_ARGS=""
-        if [ "${{ matrix.java-version }}" != "8" ]; then
-          ANT_OPTS_ARGS="-Djavac.source=1.8 -Djavac.target=1.8"
-        fi
-        ant $ANT_OPTS_ARGS -noinput -buildfile Ports/CLDC11/build.xml jar
+      run: ant -noinput -buildfile Ports/CLDC11/build.xml jar
 
     - name: Upload a Build Artifact
-      if: matrix.java-version == 8
       uses: actions/upload-artifact@v4
       with:
         name: ByteCodeTranslator.jar
         path: vm/ByteCodeTranslator/target/ByteCodeTranslator-1.0-SNAPSHOT.jar
 
     - name: Upload a Build Artifact
-      if: matrix.java-version == 8
       uses: actions/upload-artifact@v4
       with:
         name: CLDC11.jar
         path: Ports/CLDC11/dist/CLDC11.jar
 
     - name: Build Android Port
-      run: |
-        ANT_OPTS_ARGS=""
-        if [ "${{ matrix.java-version }}" != "8" ]; then
-          ANT_OPTS_ARGS="-Djavac.source=1.8 -Djavac.target=1.8"
-        fi
-        ant $ANT_OPTS_ARGS -noinput -buildfile Ports/Android/build.xml jar
+      run: ant -noinput -buildfile Ports/Android/build.xml jar
 
     - name: Packaging Everything
-      if: matrix.java-version == 8
       run: zip -j result.zip CodenameOne/javadocs.zip CodenameOne/dist/CodenameOne.jar CodenameOne/updatedLibs.zip Ports/JavaSE/dist/JavaSE.jar build/CodenameOneDist/CodenameOne/demos/CodenameOne_SRC.zip
 
     - name: Copying Files to Server
-      if: matrix.java-version == 8
       uses: marcodallasanta/[email protected]
       with:
         host: ${{ secrets.WP_HOST }}
@@ -331,7 +277,6 @@ jobs:
         local: result.zip
 
     - name: Upload a Build Artifact
-      if: matrix.java-version == 8
       uses: actions/upload-artifact@v4
       with:
         name: JavaSE.jar