ci(internal-workflows): publish with in-cluster authentication

.github/workflows/publish.yaml

@@ -25,6 +25,7 @@ env:
   template_name: homelab-workspace
   source_ref: ${{ github.event.release.tag_name || inputs.release_tag }}
   source_sha: ${{ github.event.release.tag_name || inputs.release_tag }}
+  template_source_ref: ${{ github.event_name == 'workflow_dispatch' && 'main' || github.event.release.tag_name }}
 
 jobs:
   publish-image:
@@ -70,7 +71,7 @@ jobs:
         fetch-depth: 1
         persist-credentials: false
         path: release
-        ref: ${{ env.source_ref }}
+        ref: ${{ env.template_source_ref }}
 
     - name: Tailscale Connect
       uses: tailscale/github-action@780049a30b6ff5c378a9e7b389d15ece7a204888 # v4.1.3
@@ -97,7 +98,7 @@ jobs:
         workspace_image: "ghcr.io/ppat/coder-workspace:${{ needs.publish-image.outputs.image_tag }}"
         home_pvc_storage_class: sc-longhorn-replicated
         tmp_pvc_storage_class: sc-longhorn-local-non-replicated-ephemeral
-        kubernetes_config_path: ""
+        kubernetes_config_path: in-cluster
         skip_dotfiles_scripts: "false"
         message: "[Release Notes](https://github.com/${{ github.repository }}/releases/tag/${{ env.source_sha }})"
 

.github/workflows/test-template.yaml

@@ -108,6 +108,18 @@ jobs:
         RELEASE_TAG="$(gh release view --repo "${{ github.repository }}" --json tagName --jq .tagName)"
         echo "workspace_image=ghcr.io/ppat/coder-workspace:${RELEASE_TAG}" >> "${GITHUB_OUTPUT}"
 
+    - name: Confirm in-cluster publish input
+      uses: ./current/actions/coder-template-push
+      with:
+        template_dir: current/templates/kubernetes/homelab-workspace
+        template_name: in-cluster-test
+        template_version: ${{ github.sha }}
+        workspace_image: ${{ steps.released_image.outputs.workspace_image }}
+        home_pvc_storage_class: standard
+        tmp_pvc_storage_class: standard
+        kubernetes_config_path: in-cluster
+        skip_dotfiles_scripts: "true"
+
     - name: Publish template
       uses: ./current/actions/coder-template-push
       with:

actions/coder-template-push/action.yaml

@@ -25,9 +25,8 @@ inputs:
     description: Storage class used for ephemeral tmp PVCs.
     required: true
   kubernetes_config_path:
-    description: Provisioner-local kubeconfig path, or empty for in-cluster authentication.
+    description: Provisioner-local kubeconfig path, or in-cluster for in-cluster authentication.
     required: true
-    default: ""
   skip_dotfiles_scripts:
     description: Whether Chezmoi should skip repository-owned bootstrap scripts.
     required: true
@@ -79,18 +78,12 @@ runs:
           "${coder_url}/api/v2/templateversions/${existing_id}" >/dev/null
       fi
 
-      variables_file="${RUNNER_TEMP}/coder-template-variables.yaml"
-      jq --null-input \
-        --arg kubernetes_config_path "${KUBERNETES_CONFIG_PATH}" \
-        '{kubernetes_config_path: $kubernetes_config_path}' > "${variables_file}"
       push_args=(
         --directory "${TEMPLATE_DIR}"
         --var "workspace_image=${WORKSPACE_IMAGE}"
         --var "home_pvc_storage_class=${HOME_PVC_STORAGE_CLASS}"
         --var "tmp_pvc_storage_class=${TMP_PVC_STORAGE_CLASS}"
-        # Coder discards an empty `--var name=` assignment. A variables file
-        # preserves the required empty string used for in-cluster auth.
-        --variables-file "${variables_file}"
+        --var "kubernetes_config_path=${KUBERNETES_CONFIG_PATH}"
         --var "skip_dotfiles_scripts=${SKIP_DOTFILES_SCRIPTS}"
         --name "${TEMPLATE_VERSION}"
         --yes