add test docker image to ghcr for dynamic VM testing

.github/workflows/build_test_containers.yml

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+name: Docker
+
+on:
+  pull_request:
+    paths:
+    - .github/workflows/build_test_containers.yml
+    - ansible/docker/test/Dockerfile*
+    branches:
+    - master
+  push:
+    paths:
+    - .github/workflows/build_test_containers.yml
+    - ansible/docker/test/Dockerfile*
+    branches:
+    - master
+
+permissions:
+  contents: read
+  packages: write
+
+jobs:
+    generate-matrix:
+        name: Generate Matrix
+        runs-on: ubuntu-latest
+        if: github.repository_owner == 'adoptium'
+        outputs:
+            matrix: ${{ steps.generate_matrix.outputs.matrix }}
+        steps:
+            - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
+              with:
+                fetch-depth: 0
+
+            # Get list of changed files in ansible/docker/test/Dockerfile*
+            - name: Get list of changed Dockerfiles
+              run: |
+                if [ ${{ github.event_name }} == "push" ]; then
+                    changed_files=$(git diff --name-only HEAD~1 | grep ansible/docker/test/Dockerfile || true)
+                else
+                    changed_files=$(git diff --name-only origin/master | grep ansible/docker/test/Dockerfile || true)
+                fi
+                echo $changed_files
+                echo "changed_files=$changed_files" >> "$GITHUB_ENV"
+
+            # Generate matrix
+            - name: Generate matrix
+              if: ${{ env.changed_files != '' }}
+              id: generate_matrix
+              run: |
+                matrix=$(jq -n --arg files "${changed_files}" '{
+                  "include": ($files | split("\n") | map(select(length > 0) | {dockerfile: .}))
+                }')
+                echo "matrix<<EOF"$'\n'"$matrix"$'\n'EOF >> $GITHUB_OUTPUT
+
+    build-dockerfiles:
+        name: Build Dockerfiles
+        runs-on: ubuntu-latest
+        needs: generate-matrix
+        strategy:
+            matrix: ${{fromJson(needs.generate-matrix.outputs.matrix)}}
+        steps:
+            - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
+
+            # Generate tag name based on the Dockerfile name
+            - name: Set tag name
+              run: echo "TAG_NAME=$(basename ${{ matrix.dockerfile }} | cut -d'.' -f2 | tr '[:upper:]' '[:lower:]')" >> $GITHUB_ENV
+
+            - name: Build Dockerfile
+              run: docker build -t ghcr.io/${{ github.repository_owner }}/test-containers:$TAG_NAME -f ${{ matrix.dockerfile }} .
+
+            - name: Push Dockerfile to ghcr.io
+              if: github.event_name == 'push'
+              run: |
+                echo ${{ secrets.GITHUB_TOKEN }} | docker login ghcr.io -u ${{ github.repository_owner }} --password-stdin
+                docker push ghcr.io/${{ github.repository_owner }}/test-containers:$TAG_NAME

ansible/docker/test/Dockerfile.Ubuntu2204

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+FROM ubuntu:22.04
+
+ARG ant_version="1.10.15"
+ARG ant_512checksum="1de7facbc9874fa4e5a2f045d5c659f64e0b89318c1dbc8acc6aae4595c4ffaf90a7b1ffb57f958dd08d6e086d3fff07aa90e50c77342a0aa5c9b4c36bff03a9"
+ARG user="jenkins"
+
+ENV DEBIAN_FRONTEND=noninteractive
+RUN apt-get update && apt-get install -qq -y \
+    curl \
+    fontconfig \
+    gcc \
+    git \
+    gnupg \
+    libxi6 \
+    libxrender1 \
+    libxtst6 \
+    locales \
+    make \
+    openjdk-17-jdk-headless \
+    openssh-client \
+    perl \
+    unzip \
+    wget \
+    xvfb \
+    zip
+
+# Install ant
+RUN wget -q -O /tmp/ant.zip "https://archive.apache.org/dist/ant/binaries/apache-ant-${ant_version}-bin.zip"
+RUN wget -q -O /tmp/ant-contrib.tar.gz  https://sourceforge.net/projects/ant-contrib/files/ant-contrib/ant-contrib-1.0b2/ant-contrib-1.0b2-bin.tar.gz
+RUN echo "$ant_512checksum  /tmp/ant.zip" > /tmp/ant.sha512
+RUN echo "0fd2771dca2b8b014a4cb3246715b32e20ad5d26754186d82eee781507a183d5e63064890b95eb27c091c93c1209528a0b18a6d7e6901899319492a7610e74ad  /tmp/ant-contrib.tar.gz" >> /tmp/ant.sha512
+RUN sha512sum --check --strict /tmp/ant.sha512
+RUN ln -s /usr/local/apache-ant-${ant_version}/bin/ant /usr/bin/ant
+RUN unzip -q -d /usr/local /tmp/ant.zip
+RUN tar xpfz /tmp/ant-contrib.tar.gz -C /usr/local/apache-ant-${ant_version}/lib --strip-components=2 ant-contrib/lib/ant-contrib.jar
+
+# Clear up space
+RUN rm /tmp/ant.zip /tmp/ant-contrib.tar.gz
+
+RUN locale-gen en_US.utf8
+
+RUN groupadd -g 1000 ${user}
+RUN useradd -c "Jenkins user" -d /home/${user} -u 1000 -g 1000 -m ${user}