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Update readme with workload identity based authentication for GCR and GAR
Signed-off-by: Dinesh B <dineshudt17@gmail.com> Signed-off-by: Dinesh <dineshb@thoughtworks.com>
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Dinesh B
Dinesh
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104
README.md
104
README.md
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> Google Container Registry, use the information [on this page](https://cloud.google.com/artifact-registry/docs/transition/transition-from-gcr)
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> to learn about transitioning to Google Artifact Registry.
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You can use either workload identity federation based keyless authentication or service account based authentication.
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#### Workload identity federation based authentication
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Configure the workload identity federation for github actions in gcloud (for steps, [refer here](https://github.com/google-github-actions/auth#setting-up-workload-identity-federation)). In the steps, your service account should the ability to push to GCR. Then use google-github-actions/auth action for authentication using workload identity like below:
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```yaml
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name: ci
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branches: main
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runs-on: ubuntu-latest
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steps:
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- id: 'auth'
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name: 'Authenticate to Google Cloud'
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uses: 'google-github-actions/auth@v0'
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with:
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token_format: 'access_token'
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workload_identity_provider: '<workload_identity_provider>'
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service_account: '<service_account>'
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- name: Login to GCR
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uses: docker/login-action@v1
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with:
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registry: gcr.io
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username: oauth2accesstoken
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password: ${{ steps.auth.outputs.access_token }}
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```
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> Replace `<workload_identity_provider>` with configured workload identity provider. For steps to configure, [refer here](https://github.com/google-github-actions/auth#setting-up-workload-identity-federation).
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> Replace `<service_account>` with configured service account in workload identity provider which has access to push to GCR
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#### Service account based authentication
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Use a service account with the ability to push to GCR and [configure access control](https://cloud.google.com/container-registry/docs/access-control).
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Then create and download the JSON key for this service account and save content of `.json` file
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[as a secret](https://docs.github.com/en/actions/configuring-and-managing-workflows/creating-and-storing-encrypted-secrets#creating-encrypted-secrets-for-a-repository)
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branches: main
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### Google Artifact Registry (GAR)
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You can use either workload identity federation based keyless authentication or service account based authentication.
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#### Workload identity federation based authentication
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Configure the workload identity federation for github actions in gcloud (for steps, [refer here](https://github.com/google-github-actions/auth#setting-up-workload-identity-federation)). In the steps, your service account should the ability to push to GAR. Then use google-github-actions/auth action for authentication using workload identity like below:
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```yaml
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name: ci
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push:
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branches: main
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jobs:
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login:
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runs-on: ubuntu-latest
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steps:
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- id: 'auth'
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name: 'Authenticate to Google Cloud'
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uses: 'google-github-actions/auth@v0'
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with:
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token_format: 'access_token'
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workload_identity_provider: '<workload_identity_provider>'
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service_account: '<service_account>'
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- name: Login to GAR
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uses: docker/login-action@v1
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with:
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registry: <location>-docker.pkg.dev
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username: oauth2accesstoken
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password: ${{ steps.auth.outputs.access_token }}
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```
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> Replace `<workload_identity_provider>` with configured workload identity provider
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> Replace `<service_account>` with configured service account in workload identity provider which has access to push to GCR
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> Replace `<location>` with the regional or multi-regional [location](https://cloud.google.com/artifact-registry/docs/repo-organize#locations)
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> of the repository where the image is stored.
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#### Service account based authentication
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Use a service account with the ability to push to GAR and [configure access control](https://cloud.google.com/artifact-registry/docs/access-control).
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Then create and download the JSON key for this service account and save content of `.json` file
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[as a secret](https://docs.github.com/en/actions/configuring-and-managing-workflows/creating-and-storing-encrypted-secrets#creating-encrypted-secrets-for-a-repository)
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@ -179,7 +259,7 @@ name: ci
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@ -208,7 +288,7 @@ name: ci
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@ -231,7 +311,7 @@ name: ci
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@ -258,7 +338,7 @@ name: ci
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branches: main
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@ -291,7 +371,7 @@ name: ci
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@ -325,7 +405,7 @@ name: ci
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