Add GH workflows

.github/actions/runner-cleanup/action.yaml

@@ -0,0 +1,29 @@
+name: 'runner-cleanup'
+description: 'Clean leftover VMs nd prepare configuration files'
+runs:
+  using: "composite"
+  steps:
+    - name: Delete all existing VirtualBox VMs
+      shell: bash
+      run: |
+        VBoxManage list vms |
+        sed 's/.*{\([-[:xdigit:]]\+\)}$/\1/' |
+        xargs -I% sh -c "VBoxManage controlvm % poweroff; sleep 3; VBoxManage unregistervm % --delete"
+    - name: Delete existing virsh VMs
+      shell: bash
+      run: |
+        virsh list --all --name |
+        xargs -I% sh -c "virsh destroy %; sleep 3; virsh undefine % --remove-all-storage"
+    - name: Add Ansible configuration for pkgproxy
+      shell: bash
+      run: |
+        echo 'custom_repos_servers: ["http://10.0.2.2:8080/$repo/os/$arch"]' > ansible/group_vars/all/99-ci-pkgproxy.yaml
+    - name: Add Ansible variables for testing
+      shell: bash
+      run: |
+        echo '
+        global_portable_image: true
+        bluetooth_override: active
+        xfce_user_customizations_kvantum_theme: KvAdaptaDark
+        xscreensaver_override: active
+        ' > ansible/group_vars/all/90-ci-defaults.yaml

.github/workflows/test-install.yaml

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+name: Test the playbook
+
+on:
+  push:
+    branches:
+      - ci
+
+jobs:
+  install_media:
+    runs-on: [self-hosted, linux]
+    strategy:
+      matrix:
+        config:
+          - disksetup: disksetup/mbr_singlepart/
+            provider: virtualbox-iso
+          - disksetup: disksetup/mbr_lvm/
+            provider: qemu
+          - disksetup: disksetup/bios_gpt_btrfs/
+            provider: virtualbox-iso
+          - disksetup: disksetup/gpt_singlepart/
+            provider: virtualbox-uefi
+    steps:
+      - uses: actions/checkout@v3
+      - uses: ./.github/actions/runner-cleanup
+      - name: Select the partitioning flow
+        run: |
+          echo 'disksetup_roles_prefix:  ${{ matrix.config.disksetup }}' > ansible/group_vars/all/91-ci-disksetup.yaml
+      - name: Perform system installation
+        run: |
+          cd packer
+          ./packer-wrapper.sh build -only=${{ matrix.config.provider }} -timestamp-ui packer-template.json
+
+  vagrant_provision:
+    runs-on: [self-hosted, linux]
+    strategy:
+      matrix:
+        provider: [virtualbox, libvirt]
+    steps:
+      - uses: actions/checkout@v3
+      - uses: ./.github/actions/runner-cleanup
+      - name: Bring Vagrant VM up
+        run: |
+          cd vagrant
+          vagrant up --provider ${{ matrix.provider }}