feat(ci): add weekly scheduled wheel build matrix (#941)

- new workflow build_in_container_scheduled.yml runs weekly (mon 06:00 utc) and on manual dispatch, fanning out across [ubuntu-22.04, ubuntu-22.04-arm] x last 7 ngc pytorch images x last 3 upstream releases
- new helper check_for_releases.sh resolves the last 3 stable release tags via gh

Signed-off-by: oliver könig <okoenig@nvidia.com>

Author: ko3n1g

.github/scripts/check_for_releases.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+
+set -eo pipefail
+
+UPSTREAM_REPO="${UPSTREAM_REPO:?UPSTREAM_REPO must be set, e.g. state-spaces/mamba}"
+LIMIT="${LIMIT:-3}"
+OUTPUT_FILE="${OUTPUT_FILE:-releases.json}"
+
+echo "Fetching last ${LIMIT} stable releases of ${UPSTREAM_REPO}..."
+echo "---------------------------------------------------------------------"
+
+gh release list \
+  --repo "$UPSTREAM_REPO" \
+  --limit "$LIMIT" \
+  --exclude-drafts \
+  --exclude-pre-releases \
+  --json tagName \
+  --jq '[.[].tagName]' \
+  > "$OUTPUT_FILE"
+
+echo "Resolved release tags:"
+cat "$OUTPUT_FILE"
+echo
+echo "---"
+echo "Check complete."

.github/workflows/build_in_container_scheduled.yml

@@ -0,0 +1,48 @@
+name: Build wheels in a container (scheduled)
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: "0 6 * * 1"
+
+jobs:
+  compute_matrix:
+    runs-on: ubuntu-latest
+    outputs:
+      runners: ${{ steps.compute.outputs.RUNNERS }}
+      container-images: ${{ steps.compute.outputs.IMAGES }}
+      release-versions: ${{ steps.compute.outputs.RELEASES }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Check for NGC PyTorch images
+        run: bash ./.github/scripts/check_for_ngc_images.sh
+
+      - name: Check for upstream releases
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          UPSTREAM_REPO: state-spaces/mamba
+        run: bash ./.github/scripts/check_for_releases.sh
+
+      - name: Build matrix outputs
+        id: compute
+        run: |
+          echo "RUNNERS=$(jq -cn '["ubuntu-22.04","ubuntu-22.04-arm"]')" | tee -a "$GITHUB_OUTPUT"
+          echo "IMAGES=$(jq -cr . ngc_images.json)" | tee -a "$GITHUB_OUTPUT"
+          echo "RELEASES=$(jq -cr . releases.json)" | tee -a "$GITHUB_OUTPUT"
+
+  build-wheels:
+    needs: [compute_matrix]
+    strategy:
+      fail-fast: false
+      matrix:
+        runner: ${{ fromJson(needs.compute_matrix.outputs.runners) }}
+        container-image: ${{ fromJson(needs.compute_matrix.outputs.container-images) }}
+        release-version: ${{ fromJson(needs.compute_matrix.outputs.release-versions) }}
+    uses: ./.github/workflows/_build_in_container.yml
+    with:
+      runs-on: ${{ matrix.runner }}
+      container-image: ${{ matrix.container-image }}
+      upload-to-release: false
+      release-version: ${{ matrix.release-version }}