Deploying to Cloud Run using Cloud Build

This page explains how to automatically deploy Cloud Run services using Cloud Build. If you're new to Cloud Build, read the quickstarts and the build configuration overview first.

Cloud Run lets you run stateless images in a serverless environment. Using Cloud Build, you can deploy images from Artifact Registry to Cloud Run. You can deploy an existing image, build and deploy an image, or automate the deployment.

Before you begin

  • Enable the Cloud Build, Cloud Run, Artifact Registry, and Resource Manager APIs.

    Enable the APIs

Required Identity and Access Management permissions

To get the permissions that you need to deploy to Cloud Run using Cloud Build, ask your administrator to grant you the following IAM roles on the default Cloud Build service account:

For more information about granting roles, see Manage access to projects, folders, and organizations.

You might also be able to get the required permissions through custom roles or other predefined roles.

Building and deploying an image

Cloud Build lets you build an image, store the built image in Artifact Registry, and then deploy the image to Cloud Run.

To build and deploy an image:

  1. In your project root directory, create a config file named cloudbuild.yaml.

  2. In the build config file, add docker build steps to build the image and push it to Artifact Registry, and then add a gcloud build step to invoke the gcloud run deploy command to deploy the image on Cloud Run:

    steps:
# Build the image
- name: 'gcr.io/cloud-builders/docker'
  args: ['build', '-t', 'LOCATION-docker.pkg.dev/PROJECT_ID/REPOSITORY/IMAGE', '.']
# Push the image to Artifact Registry
- name: 'gcr.io/cloud-builders/docker'
  args: ['push', 'LOCATION-docker.pkg.dev/PROJECT_ID/REPOSITORY/IMAGE']
# Deploy image to Cloud Run
- name: 'gcr.io/google.com/cloudsdktool/cloud-sdk'
  entrypoint: gcloud
  args: ['run', 'deploy', 'SERVICE_NAME', '--image', 'LOCATION-docker.pkg.dev/PROJECT_ID/REPOSITORY/IMAGE', '--region', 'SERVICE_REGION']
images:
- 'LOCATION-docker.pkg.dev/PROJECT_ID/REPOSITORY/IMAGE'

    Where:

    • REPOSITORY is the name of the Artifact Registry repository from where you deploy your image.
    • LOCATION is the location of your Artifact Registry repository, such as us-east1.
    • PROJECT_ID is your Google Cloud project ID where your image is stored.
    • SERVICE_NAME is the name of the Cloud Run service.
    • SERVICE_REGION is the region of the Cloud Run service you are deploying.
    • IMAGE is the name of your image in Artifact Registry.

  3. Navigate to your project root directory and run the following command, where LOCATION is one of the supported build regions to run the build:

     gcloud builds submit --region=LOCATION

After successful completion, a success message is displayed along with the URL of the deployed service.

Continuous deployment

You can automate the deployment of your software to Cloud Run by creating Cloud Build triggers. You can configure your triggers to build and deploy images whenever you update your source code.

To automate your deployment:

  1. In your repository root, add a config file named cloudbuild.yaml with steps to build the image, push the image to Artifact Registry, and then invoke the gcloud run deploy command:

    steps:
# Build the image
- name: 'gcr.io/cloud-builders/docker'
  args: ['build', '-t', 'LOCATION-docker.pkg.dev/PROJECT_ID/REPOSITORY/IMAGE/SERVICE_NAME:$COMMIT_SHA', '.']
# Push the image to Artifact Registry
- name: 'gcr.io/cloud-builders/docker'
  args: ['push', 'LOCATION-docker.pkg.dev/PROJECT_ID/REPOSITORY/IMAGE/SERVICE_NAME:$COMMIT_SHA']
# Deploy image to Cloud Run
- name: 'gcr.io/google.com/cloudsdktool/cloud-sdk'
  entrypoint: gcloud
  args: 
    - 'run'
    - 'deploy'
    - 'SERVICE_NAME'
    - '--image'
    - 'LOCATION-docker.pkg.dev/PROJECT_ID/REPOSITORY/IMAGE/SERVICE_NAME:$COMMIT_SHA'
    - '--region'
    - 'SERVICE_REGION'
images:
- 'LOCATION-docker.pkg.dev/PROJECT_ID/REPOSITORY/IMAGE/SERVICE_NAME:$COMMIT_SHA'

    Where:

    • REPOSITORY is the name of the Artifact Registry repository from where you deploy your image.
    • LOCATION is the location of your Artifact Registry repository, such as us-east1.
    • PROJECT_ID is your Google Cloud project ID where your image is stored.
    • SERVICE_NAME is the name of the Cloud Run service.
    • SERVICE_REGION is the region of the Cloud Run service you are deploying.
    • IMAGE is the name of your image in Artifact Registry.

    The $COMMIT_SHA substitution variable is populated by Cloud Build when triggered from a Git repository.

  2. Create a build trigger with the config file created in the previous step:

    1. Open the Triggers page:

      Go to the Triggers page

    2. Click Create Trigger.

    3. In the Name field, enter a name for your trigger.

    4. Under Region, select the region for your trigger.

    5. Under Event, select the repository event to start your trigger.

    6. Under Source, select your repository and the branch or tag name that will start your trigger. For more information on specifying which branches to autobuild, see Creating a build trigger.

    7. Under Configuration, select Cloud Build configuration file (YAML or JSON).

    8. In the Cloud Build configuration file location field, type cloudbuild.yaml after the /.

    9. Click Create to save your build trigger.

    Now, when you push new code to your repository, Cloud Build invokes a build and deploys the service to Cloud Run.

For more information on creating Cloud Build triggers, see Creating and managing build triggers.

Using minimal IAM permissions

When an image is deployed to a Cloud Run service, the image runs using the identity of the Runtime Service Account from the Cloud Run service. Because Cloud Build can deploy new images automatically, Cloud Build needs to be able to act as the Runtime Service Account of your Cloud Run service.

To grant limited access to Cloud Build to deploy to a Cloud Run service, do the following:

Console

  1. Go to the Service accounts page of the Google Cloud console:

    Go to Service accounts

  2. Click the email address of your Cloud Run service's Runtime Service Account (by default, it is PROJECT_NUMBER-compute@developer.gserviceaccount.com).

  3. Click the Permissions tab.

  4. Click Grant access.

  5. Enter the Cloud Build Service Account (PROJECT_NUMBER@cloudbuild.gserviceaccount.com)

  6. In the Select a role drop-down, select the Service Accounts > Service Account User role.

  7. Click Save.

gcloud

Use the gcloud iam service-accounts add-iam-policy-binding command, where PROJECT_NUMBER is the numeric ID of your project:

gcloud iam service-accounts add-iam-policy-binding \
  PROJECT_NUMBER-compute@developer.gserviceaccount.com \
  --member="serviceAccount:PROJECT_NUMBER@cloudbuild.gserviceaccount.com" \
  --role="roles/iam.serviceAccountUser"

Replace PROJECT_NUMBER with the numeric ID of your project.

If you use Cloud Run with a customized service identity, then replace PROJECT_NUMBER-compute@developer.gserviceaccount.com with your service account address.

See Deployment permissions for more information.

Code examples

Here are some sample repositories, each of which contains a sample application and a build config file to deploy application to Cloud Run:

What's next