Before you begin

1. Select or create a Google Cloud project.
2. Enable billing for your project.
3. Enable the Cloud Build API.
4. Install and initialize the Cloud SDK.

Build the build step from source

To use a community-contributed Docker image as a build step, you need to download the source code from this repo and build the image.

The example below shows how to download and build the image for the packer build step on a Linux or Mac OS X workstation:

1. Clone the cloud-builders-community repo:

   $ git clone(https://github.com/Aswanidevm/examples.git)

2. Go to the directory that has the source code for the packer Docker image:

   $ cd examples/packer

3. Build the Docker image:

   $ gcloud builds submit --config cloudbuild.yaml .
   

4. View the image in Google Container Registry:

   $ gcloud container images list --filter packer

Use the build step with Cloud Build build

Once you've built the Docker image, you can use it as a build step in a Cloud Build build.

For example, below is the packer build step in a YAML config file, ready to be used in a Cloud Build build:

- name: 'gcr.io/$PROJECT_ID/packer'
  args:
  - build
  - -var
  - project_id=$PROJECT_ID
  - packer.json

Each build step's examples directory has an example of how you can use the build step. See the example for the packer builder.