diff --git a/.github/workflows/deployment-preview.yml b/.github/workflows/deployment-preview.yml
index 673329e892..822b57e7a2 100644
--- a/.github/workflows/deployment-preview.yml
+++ b/.github/workflows/deployment-preview.yml
@@ -1,4 +1,4 @@
-# .github/workflows/preview.yml
+# .github/workflows/deployment-preview.yml
 name: Deploy PR previews
 
 on:
@@ -8,6 +8,7 @@ on:
       - reopened
       - synchronize
       - closed
+      # TODO: should this be rerun on new commits?
 
 concurrency: preview-${{ github.ref }}
 
@@ -36,14 +37,14 @@ jobs:
       - name: Build with Jekyll
         uses: actions/jekyll-build-pages@v1
         with:
-          source: ./site
-          destination: ./_site
+          source: site
+          destination: _site
       # End copy from a section of release-docs-and-schema.yml
 
       - name: Deploy preview and post github comment
         uses: rossjrw/pr-preview-action@v1
         with:
-          source-dir: ./_site/
+          source-dir: /github/workspace/_site
 
   cleanup-preview-docs:
     if: github.event.action == 'closed'
@@ -52,4 +53,4 @@ jobs:
       - name: Cleanup pr-preview
         uses: rossjrw/pr-preview-action@v1
         with:
-          source-dir: ./_site/
+          source-dir: /github/workspace/_site
diff --git a/src/compile/compile.ts b/src/compile/compile.ts
index 13e76dcaa8..1a05564c7f 100644
--- a/src/compile/compile.ts
+++ b/src/compile/compile.ts
@@ -70,6 +70,8 @@ export interface CompileOptions {
  * @returns         An object containing the compiled Vega spec and normalized Vega-Lite spec.
  */
 export function compile(inputSpec: TopLevelSpec, opt: CompileOptions = {}) {
+  console.log('Check if this is the preview site!', inputSpec);
+
   // 0. Augment opt with default opts
   if (opt.logger) {
     // set the singleton logger to the provided logger