[AMD] release rocm10 image for gfx1250 from amd_helios (#36892)

.github/workflows/release-docker-amd-rocm10.yml

@@ -10,6 +10,7 @@ on:
         options:
           - 'all'
           - publish
+          - publish-gfx1250
       gpu_arch:
         description: 'Select which ROCm 10 GPU arch to build'
         required: false
@@ -116,3 +117,79 @@ jobs:
         run: |
           docker tag "rocm/sgl-dev:${IMAGE_TAG}" "lmsysorg/sglang-rocm:${IMAGE_TAG}"
           docker push "lmsysorg/sglang-rocm:${IMAGE_TAG}"
+
+  # gfx1250 (MI45x) is still being brought up on the amd_helios branch: main
+  # has no gfx1250 stage in docker/rocm.Dockerfile, so this job builds from
+  # that branch rather than from the ref the workflow was triggered on. It runs
+  # on the same schedule as the pair above but stays a separate job, because
+  # there is no MI450 runner pool consuming the image and a bring-up build
+  # failure must not gate the released gfx942/gfx950 images.
+  publish-gfx1250:
+    if: github.repository == 'sgl-project/sglang' && (github.event_name != 'workflow_dispatch' || inputs.job_select == 'all' || inputs.job_select == 'publish-gfx1250')
+    runs-on: amd-docker-scale
+    environment: 'prod'
+    steps:
+      - name: Checkout amd_helios
+        uses: actions/checkout@v4
+        with:
+          ref: amd_helios
+          fetch-depth: 0
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.10'
+
+      - name: Set date
+        run: echo "DATE=$(date +%Y%m%d)" >> "$GITHUB_ENV"
+
+      - name: Get version and branch head
+        id: version
+        run: |
+          VERSION=$(python3 scripts/release/get_version_tag.py --tag-only | sed 's/^v//')
+
+          if [ -z "$VERSION" ]; then
+            echo "::error::Could not determine version from git tags"
+            exit 1
+          fi
+
+          # The checkout above is amd_helios, so this is the branch head that
+          # both the build context and the cloned sglang source come from.
+          BRANCH_SHA=$(git rev-parse HEAD)
+          COMMIT_HASH=$(git rev-parse --short HEAD)
+          PRETEND_VERSION="${VERSION}.dev${DATE}+g${COMMIT_HASH}"
+
+          echo "version=${VERSION}" >> "$GITHUB_OUTPUT"
+          echo "branch_sha=${BRANCH_SHA}" >> "$GITHUB_OUTPUT"
+          echo "pretend_version=${PRETEND_VERSION}" >> "$GITHUB_OUTPUT"
+          echo "Building gfx1250 from amd_helios at ${BRANCH_SHA}"
+
+      - name: Login to Docker Hub (AMD)
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_AMD_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_AMD_TOKEN }}
+
+      - name: Build and push to rocm/sgl-dev
+        env:
+          BRANCH_SHA: ${{ steps.version.outputs.branch_sha }}
+          PRETEND_VERSION: ${{ steps.version.outputs.pretend_version }}
+          VERSION: ${{ steps.version.outputs.version }}
+        run: |
+          # `dev` marks this as built from a bring-up branch rather than from
+          # the ref the release ran on, so it never reads as a released tag.
+          image_tag="v${VERSION}-rocm10-mi45x-dev-${DATE}"
+          echo "Publishing rocm/sgl-dev:${image_tag}"
+
+          docker build . \
+            -f docker/rocm.Dockerfile \
+            --build-arg "SGL_BRANCH=${BRANCH_SHA}" \
+            --build-arg BUILD_TYPE=all \
+            --build-arg GPU_ARCH=gfx1250-rocm1000 \
+            --build-arg ENABLE_MORI=1 \
+            --build-arg ENABLE_NIXL=1 \
+            --build-arg "SETUPTOOLS_SCM_PRETEND_VERSION=${PRETEND_VERSION}" \
+            --build-arg UBUNTU_MIRROR=https://archive.ubuntu.com \
+            -t "rocm/sgl-dev:${image_tag}" \
+            --no-cache
+          docker push "rocm/sgl-dev:${image_tag}"