github/workflows: Add build/publish workflows

This commit ports the build and publish workflows from:

Branch: eve-kernel-arm64-v5.15.136-nvidia-jp6
HEAD:   dbf1688

Signed-off-by: Renê de Souza Pinto <rene@renesp.com.br>

Author: rene

.github/workflows/pr-build.yml

@@ -0,0 +1,53 @@
+name: PR Build
+
+on: # yamllint disable-line rule:truthy
+    pull_request:
+        branches:
+            - "eve-kernel-arm64-v6.8.12-nvidia-jp7"
+        paths-ignore:
+            - ".github/**"
+
+concurrency:
+    group: pr-build-${{ github.event.pull_request.number }}
+    cancel-in-progress: true
+
+jobs:
+    build:
+        runs-on: [runner-xl, Linux]
+
+        steps:
+            - name: Set sanitized branch name
+              id: branch-setter
+              run: |
+                  BRANCH_NAME="${{ github.event.pull_request.head.ref }}"
+                  SAFE_BRANCH="${BRANCH_NAME//\//-}"
+                  echo "SAFE_BRANCH=$SAFE_BRANCH" >> $GITHUB_ENV
+            - name: Checkout PR code
+              uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+              with:
+                  ref: ${{ github.event.pull_request.head.sha }}
+                  repository: ${{ github.event.pull_request.head.repo.full_name }}
+                  fetch-depth: 1
+
+            - name: Build kernel
+              run: |
+                  make -f Makefile.eve \
+                    BRANCH=$SAFE_BRANCH \
+                    kernel-gcc
+
+            - name: Clean
+              if: always()
+              run: |
+                  make -f Makefile.eve \
+                    BRANCH=$SAFE_BRANCH \
+                    clean-gcc
+                  if docker ps -q -f name=linuxkit-builder | grep -q .; then
+                      echo "=== BuildKit disk usage before prune ==="
+                      docker exec linuxkit-builder buildctl du | tail -n 2
+                      echo "=== Reclaiming ==="
+                      docker exec linuxkit-builder buildctl prune --keep-storage "${BUILDKIT_KEEP_STORAGE_MB:-32000}" | tail -n 1
+                      echo "=== BuildKit disk usage after prune ==="
+                      docker exec linuxkit-builder buildctl du | tail -n 2
+                  else
+                      echo "linuxkit-builder container not running; skipping BuildKit cleanup."
+                  fi

.github/workflows/publish.yml

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+name: Building and pushing Eve kernel images
+
+on:
+    push:
+        branches:
+            - "eve-kernel-arm64-v6.8.12-nvidia-jp7"
+
+concurrency:
+    group: main-build-${{ github.ref }}
+    cancel-in-progress: true
+
+jobs:
+    build:
+        runs-on: [runner-xl, Linux]
+
+        steps:
+            - name: Checkout code
+              uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+              with:
+                  ref: ${{ github.ref }}
+                  fetch-depth: 1
+
+            - name: Login to Docker Hub (pull)
+              uses: docker/login-action@b45d80f862d83dbcd57f89517bcf500b2ab88fb2 # v4.0.0
+              with:
+                  username: ${{ secrets.DOCKERHUB_PULL_USER }}
+                  password: ${{ secrets.DOCKERHUB_PULL_TOKEN }}
+
+            - name: Build kernel from ${{ github.ref_name }}
+              run: |
+                  make -f Makefile.eve \
+                    BRANCH=${{ github.ref_name }} \
+                    kernel-gcc
+
+            - name: Login to Docker Hub (push)
+              uses: docker/login-action@b45d80f862d83dbcd57f89517bcf500b2ab88fb2 # v4.0.0
+              with:
+                  username: ${{ secrets.RELEASE_DOCKERHUB_ACCOUNT }}
+                  password: ${{ secrets.RELEASE_DOCKERHUB_TOKEN }}
+
+            - name: Push from ${{ github.ref_name }}
+              run: |
+                  make -f Makefile.eve \
+                    BRANCH=${{ github.ref_name }} \
+                    push-gcc
+
+            - name: Clean
+              if: always()
+              run: |
+                  make -f Makefile.eve \
+                    BRANCH=${{ github.ref_name }} \
+                    clean-gcc
+                  if docker ps -q -f name=linuxkit-builder | grep -q .; then
+                      echo "=== BuildKit disk usage before prune ==="
+                      docker exec linuxkit-builder buildctl du | tail -n 2
+                      echo "=== Reclaiming ==="
+                      docker exec linuxkit-builder buildctl prune --keep-storage "${BUILDKIT_KEEP_STORAGE_MB:-32000}" | tail -n 1
+                      echo "=== BuildKit disk usage after prune ==="
+                      docker exec linuxkit-builder buildctl du | tail -n 2
+                  else
+                      echo "linuxkit-builder container not running; skipping BuildKit cleanup."
+                  fi