run matrix build on weekly schedule (#1427)

Author: Emilgardis

.github/workflows/ci.yml

@@ -126,7 +126,7 @@ jobs:
     name: target (${{ matrix.pretty }},${{ matrix.os }})
     runs-on: ${{ matrix.os }}
     needs: [shellcheck, test, generate-matrix, check]
-    if: (github.event_name == 'push' || github.event_name == 'workflow_dispatch' || github.event_name == 'merge_group' || github.event_name == 'issue_comment')  && needs.generate-matrix.outputs.matrix != '{}' && needs.generate-matrix.outputs.matrix != '[]' && needs.generate-matrix.outputs.matrix != ''
+    if: (github.event_name == 'push' || github.event_name == 'workflow_dispatch' || github.event_name == 'merge_group' || github.event_name == 'issue_comment' || github.event_name == 'schedule')  && needs.generate-matrix.outputs.matrix != '{}' && needs.generate-matrix.outputs.matrix != '[]' && needs.generate-matrix.outputs.matrix != ''
     concurrency:
       group: ${{ github.workflow }}-${{ github.ref }}-${{ matrix.pretty }}
       cancel-in-progress: false
@@ -240,7 +240,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: Push image to GitHub Container Registry
         if: >
-          (github.event_name == 'push' || github.event_name == 'workflow_dispatch') &&
+          (github.event_name == 'push' || github.event_name == 'workflow_dispatch' || github.event_name == 'schedule') &&
           steps.prepare-meta.outputs.has-image && (
             github.ref == format('refs/heads/{0}', github.event.repository.default_branch) ||
             startsWith(github.ref, 'refs/tags/v')