Run kernel builds on self-hosted runners:

Also, always output the matrix.

Signed-off-by: Jacob Weinstock <[email protected]>

.github/workflows/build-all-matrix.yaml

@@ -26,6 +26,9 @@ env: # Global environment, passed to all jobs & all steps
 
   # GHA runner configuration. See bash/json-matrix.sh for more details.
   CI_RUNNER_LK_CONTAINERS_ARM64: "ARM64" # Use a self-hosted runner with the "ARM64" tag for the ARM64 builds of LK containers
+  CI_RUNNER_KERNEL_AMD64: "X86" # Use a self-hosted runner with the "X86" tag for the AMD64 kernel builds
+  CI_RUNNER_KERNEL_ARM64: "ARM64" # Use a self-hosted runner with the "ARM64" tag for the ARM64 kernel builds
+
 
 jobs:
 
@@ -129,7 +132,7 @@ jobs:
         uses: docker/setup-buildx-action@v3
 
       - name: Docker Login to DockerHub # read-only token, required to be able to pull all the linuxkit pkgs without getting rate limited.
-        if: ${{ env.LOGIN_TO_DOCKERHUB == 'yes' }}
+        if: ${{ env.LOGIN_TO_DOCKERHUB == 'yes' && github.ref == 'refs/heads/main' }}
         uses: docker/login-action@v3
         with: { registry: "docker.io", username: "${{ secrets.DOCKERHUB_USERNAME }}", password: "${{ secrets.DOCKERHUB_PASSWORD }}" }
 

bash/json-matrix.sh

@@ -47,12 +47,12 @@ function output_gha_matrixes() {
 	prepare_json_matrix_lkcontainers "LK_CONTAINERS" # reads all_arches's keys and sets full_json
 	declare lkcontainers_json="${full_json}"
 
-	# If under GHA, set a GHA output variable, otherwise just log them
-	if [[ -z "${GITHUB_OUTPUT}" ]]; then
-		log info "Would have set GHA output kernels_json to: ${kernels_json}"
-		log info "Would have set GHA output lk_hooks_json to: ${lk_hooks_json}"
-		log info "Would have set GHA output lkcontainers_json to: ${lkcontainers_json}"
-	else
+	log info "kernels_json to: ${kernels_json}"
+	log info "lk_hooks_json to: ${lk_hooks_json}"
+	log info "lkcontainers_json to: ${lkcontainers_json}"
+
+	# If under GHA, set a GHA output variable.
+	if [[ -n "${GITHUB_OUTPUT}" ]]; then
 		# shellcheck disable=SC2129 # no, thanks, shellcheck.
 		echo "kernels_json=${kernels_json}" >> "${GITHUB_OUTPUT}"
 		echo "lk_hooks_json=${lk_hooks_json}" >> "${GITHUB_OUTPUT}"