add post checkout to pull main

that enables correct diff of PR with ...main

containers/README.md

@@ -1,5 +1,6 @@
 # Overview
-This folder contains files related to the machines running the build/test/checks for the merge guards.
+This folder contains files related to the machines running the build/test/checks
+for the merge guards.
 
 ## Scripts
 The scripts are written in bash (for Linux) and powershell (for Windows).
@@ -8,4 +9,12 @@ The scripts are written in bash (for Linux) and powershell (for Windows).
 Build the docker image and run it locally. This is useful for testing it.
 
 ### build_deploy.(sh|ps1)
-Build the docker and deploy it to the GCP registry. This is useful for deploying it in the Kubernetes cluster.
+Build the docker and deploy it to the GCP registry. This is useful for deploying
+it in the Kubernetes cluster.
+
+`buildkite-linux` has a cloudbuild.yaml and can be build / deployed by running
+`gcloud builds submit --config ./cloudbuild.yaml`.
+
+Note that some of the images are stored at
+us-central1-docker.pkg.dev/llvm-premerge-checks/docker/ and some at
+gcr.io/llvm-premerge-checks/ . Prefer a former one if possible.

containers/buildbot-windows/cloudbuild.yaml

@@ -6,11 +6,11 @@
 steps:
   - name: 'gcr.io/${PROJECT_ID}/windows-builder'
     args: ['--image','windows-cloud/global/images/windows-server-2019-dc-core-for-containers-v20230113',
-          '--network', 'vpc-network',
-          '--subnetwork', 'subnetwork',
-          '--region', 'europe-west3',
-          '--zone', 'europe-west3-c',
+          #'--network', 'vpc-network',
+          #'--subnetwork', 'subnetwork',
+          #'--region', 'europe-west3',
+          #'--zone', 'europe-west3-c',
           '--machineType', "n2-standard-16",
-          '--diskType', 'pd-ssd',
-          '--command', 'gcloud auth configure-docker --quiet && docker build -t gcr.io/${PROJECT_ID}/buildkite-premerge-windows:latest . && docker push gcr.io/${PROJECT_ID}/buildkite-premerge-windows:latest']
+          #'--diskType', 'pd-ssd',
+          '--command', 'gcloud auth configure-docker --quiet && docker build -t gcr.io/${PROJECT_ID}/buildkite-premerge-windows:latest . && docker push us-central1-docker.pkg.dev/llvm-premerge-checks/docker/buildkite-windows:latest']
 timeout: 7200s

containers/buildkite-linux/Dockerfile

@@ -83,6 +83,7 @@ RUN echo 'install buildkite' ;\
     apt-get clean;
 
 COPY --chown=buildkite-agent:buildkite-agent pre-checkout /etc/buildkite-agent/hooks
+COPY --chown=buildkite-agent:buildkite-agent post-checkout /etc/buildkite-agent/hooks
 
 # buildkite working directory
 VOLUME /var/lib/buildkite-agent

containers/buildkite-linux/post-checkout

@@ -0,0 +1,23 @@
+#!/bin/bash
+# Copyright 2023 Google LLC
+#
+# Licensed under the the Apache License v2.0 with LLVM Exceptions (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://llvm.org/LICENSE.txt
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# See https://buildkite.com/docs/agent/v3/hooks#job-lifecycle-hooks
+# The `post-checkout` hook runs after checkout.
+
+# Pull changes from origin/main so that diff origin/main...HEAD will show a
+# correct diff of Pull Requests that have multiple commits.
+
+set -euo pipefail
+git fetch origin main:main

kubernetes/buildkite/service-test.yaml

@@ -34,7 +34,7 @@ spec:
     spec:
       containers:
         - name: runner
-          image: gcr.io/llvm-premerge-checks/buildkite-linux:latest
+          image: us-central1-docker.pkg.dev/llvm-premerge-checks/docker/buildkite-linux:latest
           resources:
             limits:
               cpu: 2

kubernetes/buildkite/service.yaml

@@ -34,7 +34,7 @@ spec:
     spec:
       containers:
         - name: buildkite-premerge-debian
-          image: gcr.io/llvm-premerge-checks/buildkite-linux:latest
+          image: us-central1-docker.pkg.dev/llvm-premerge-checks/docker/buildkite-linux:latest
           resources:
             limits:
               cpu: 2