.github/workflows/docker-image-build.yml: automated docker images build

This workflow will be triggered by Kuiper2.0 workflow build after the
images were created.
In this workflow, the images for 32 and 64 bits basic configurations
will be downloaded and docker images will be automatically created
from their rootfs folder.

Signed-off-by: Andreea Andrisan <[email protected]>

.github/workflows/docker-image-build.yml

@@ -0,0 +1,72 @@
+name: docker image build
+on: workflow_dispatch
+
+jobs:
+  Build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        kuiper_artifact: [kuiper_basic_32, kuiper_basic_64]
+        include:
+            - kuiper_artifact: kuiper_basic_32
+              arch: linux/arm
+            - kuiper_artifact: kuiper_basic_64
+              arch: linux/arm64
+    steps:
+      - name: Login to DockerHub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_PASSWORD }}
+
+      - name: Checkout Dockerfile for image building
+        uses: actions/checkout@v4
+        with:
+          sparse-checkout: |
+            ci/Dockerfile
+          sparse-checkout-cone-mode: false
+
+      - name: Download image
+        uses: dawidd6/action-download-artifact@v5
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          workflow: kuiper2_0-build.yml
+          branch: staging/kuiper2.0
+          name: ${{ matrix.kuiper_artifact }}
+          repo: analogdevicesinc/adi-kuiper-gen
+
+      - name: Create .tar file
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y qemu-user-static
+          zip_file=$(ls *.zip)
+          unzip ${zip_file} -d .
+          img_file=$(ls *.img)
+          sudo losetup -fP ${img_file}
+          loop_device=$(losetup --list | grep "$(basename "ADI-Kuiper-Linux.*.img")" | cut -f1 -d' ')
+          mkdir rootfs
+          sudo mount "${loop_device}p2" ./rootfs
+          (
+            cd rootfs
+            sudo tar -cf ../kuiper_image.tar .
+          )
+          sudo umount ./rootfs
+          sudo losetup -d ${loop_device}
+
+      - name: Test build
+        run: |
+          docker buildx create --name armbuilder
+          docker buildx use armbuilder
+          docker buildx build --builder armbuilder -t test_kuiper_image --platform ${{ matrix.arch }} --load -f ./ci/Dockerfile .
+          ARCH_CHECK=$(docker run --platform ${{ matrix.arch }} test_kuiper_image:latest uname -a)
+          echo "$ARCH_CHECK"
+
+      - name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@v2
+        with:
+          push: true
+          tags: aandrisa/${{ matrix.kuiper_artifact }}:latest
+          file: ci/Dockerfile
+          context: .
+          platforms: ${{ matrix.arch }}