Merge pull request #2588 from tmjd/ci-precommit-check

Ensure precommit checks happen on PR code

.semaphore/semaphore.yml

@@ -43,8 +43,21 @@ global_job_config:
       - 'cache restore bin-amd64-${SEMAPHORE_GIT_SHA}'
 
 blocks:
-  - name: 'Build amd64'
+  - name: 'Pre-commit verification'
     dependencies: []
+    run:
+      when: "pull_request =~ '.*'"
+    task:
+      jobs:
+        - name: Test pre-commit checks
+          execution_time_limit:
+            minutes: 15
+          commands:
+            # reset so it looks like we haven't committed yet
+            - git reset --soft $(git merge-base $SEMAPHORE_GIT_BRANCH HEAD)
+            - make pre-commit
+  - name: 'Build amd64'
+    dependencies: ["Pre-commit verification"]
     task:
       jobs:
         - name: Build amd64