Prepare release v0.5.1. (#124)

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PiperOrigin-RevId: 228321763

* Project import generated by Copybara.

PiperOrigin-RevId: 334857822

* Project import generated by Copybara.

PiperOrigin-RevId: 334861372

* Docker upgrade release branch with static linking. (#123)

* Removed bad slack link; whitespace.

* Revert most of 90365b6.

* Placate gcloud with 1200s timeout.

* Restore build subdir.

* Fixed startup script for ubuntu 2004-lts.

Cloud SDK and docker are now easy to install.

* nil build just calls "true".

* Fixed integration tests.

Co-authored-by: Cloud Build Team <cloud-build-contact@google.com>

README.md

@@ -4,6 +4,7 @@
 execution of builds on your own hardware, and integration into local build and
 test workflows.
 
+
 --------------------------------------------------------------------------------
 
 ## Prerequisites
@@ -73,9 +74,10 @@ See the
 
 ## Support
 
-File issues here on gitHub, email `google-cloud-dev@googlegroups.com`, or join
-our [Slack channel] if you have general questions about Local Builder or
-Container Builder.
+Our documentation has a [page on getting
+support](https://cloud.google.com/cloud-build/docs/getting-support). If you have
+general questions about Local Builder or Cloud Build, you can file issues here
+on GitHub, email `google-cloud-dev@googlegroups.com`, or join our.
 
-[Google Cloud Build]: http://cloud.google.com/cloud-build/
-[Slack channel]: https://googlecloud-community.slack.com/messages/C4KCRJL4D/details/
+* [Google Cloud Build documentation](http://cloud.google.com/cloud-build/)
+* [Slack channel](https://googlecloud-community.slack.com/messages/C4KCRJL4D/details/)

cloudbuild.yaml

@@ -20,6 +20,4 @@ steps:
   entrypoint: 'bash'
   args: ['-c', './integration_tests/run_tests_on_vm.sh']
 
-timeout: '20m'
-
-
+timeout: '1200s'

cloudbuild_tag.yaml

@@ -17,6 +17,7 @@ steps:
 # Create an archive with the latest binaries; that enables a single download url.
 - name: 'gcr.io/cloud-builders/go:debian'
   entrypoint: 'bash'
+  env: ['CGO_ENABLED=0']
   args:
   - '-c'
   - |

integration_tests/cloudbuild_nil.yaml

@@ -1,3 +1,3 @@
 steps:
 - name: 'busybox'
-  args: ['sleep', '0']
+  args: ['true']

integration_tests/gce_startup_script.sh

@@ -19,52 +19,13 @@ trap uploadLogs EXIT INT TERM
 
 set -x
 
-# Install the Cloud SDK
+# Ensure Cloud SDK is installed.
+export CLOUDSDK_CORE_DISABLE_PROMPTS=1
+snap refresh google-cloud-sdk || exit
 gcloud info || exit
 
-function install_sdk() {
-  export CLOUDSDK_CORE_DISABLE_PROMPTS=1
-  export CLOUDSDK_INSTALL_DIR=/usr/lib
-
-  # We use the public installer.
-  rm -rf "$CLOUDSDK_INSTALL_DIR/google-cloud-sdk"
-  curl https://sdk.cloud.google.com | bash || exit
-
-  # Install needed components.
-  gcloud components install docker-credential-gcr --quiet || exit
-}
-install_sdk&
-export PATH=/usr/lib/google-cloud-sdk/bin:$PATH
-
-# add the install_sdk PID to the list for waiting.
-pids="$! $pids"
-
-function install_docker() {
-  # https://docs.docker.com/engine/installation/linux/docker-ce/ubuntu/#uninstall-old-versions
-  echo "Installing docker..."
-  sudo apt-get update || exit
-  sudo apt-get install -y \
-    linux-image-extra-$(uname -r) \
-    linux-image-extra-virtual \
-    apt-transport-https \
-    ca-certificates \
-    curl \
-    software-properties-common || exit
-  curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add - || exit
-  sudo add-apt-repository \
-    "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
-    $(lsb_release -cs) \
-    stable" || exit
-  sudo apt-get update || exit
-  sudo apt-get install -y docker-ce || exit
-  # Test.
-  docker --version || exit
-}
-install_docker&
-# add the install_docker PID to the list for waiting.
-pids="$! $pids"
-
-wait $pids || exit
+# Ensure Docker is installed.
+docker --version || snap install docker || exit
 successful_startup=1
 
 # Set gcloud zone

integration_tests/run_tests_on_vm.sh

@@ -9,7 +9,7 @@ gsutil -m copy ./integration_tests/* $GCS_PATH/
 gcloud config set compute/zone us-central1-f
 instance_name=ubuntu-integration-tests-$DATE
 gcloud compute instances create $instance_name \
-  --image-family=ubuntu-1404-lts \
+  --image-family=ubuntu-2004-lts \
   --image-project=ubuntu-os-cloud \
   --machine-type=n1-standard-2 \
   --scopes default,userinfo-email,cloud-platform \

integration_tests/test_script.sh

@@ -3,9 +3,6 @@
 # Set project.
 gcloud config set project $PROJECT_ID
 
-# Configure docker with gcr credentials.
-docker-credential-gcr configure-docker || exit
-
 # Flags tests.
 cloud-build-local --version || exit
 cloud-build-local --help || exit