Add docker build to pr validation (#455)

eng/pipelines/pr.yml

@@ -26,6 +26,13 @@ jobs:
         parameters:
           nodeVersion: $(nodeVersion)
 
+  - job: docker_build
+    pool:
+      vmImage: ubuntu-latest
+    steps:
+      - script: docker build -f ./docker/Dockerfile .
+        displayName: Docker build
+
   - job: Consistency_Check
     pool:
       vmImage: ubuntu-latest

eng/scripts/check-for-tryit-comment.js

@@ -17,7 +17,8 @@ async function main() {
   const result = await request("GET", url);
   const data = JSON.parse(result);
   const azoComments = data.filter((x) => x.user?.login === AZP_USERID);
-  if (azoComments.length > 1) {
+  console.log(`Found ${azoComments.length} comments from Azure Pipelines.`);
+  if (azoComments.length > 0) {
     console.log("##vso[task.setvariable variable=SKIP_COMMENT;]true");
   }
 }