Roll variant headlines out to 50% of users

[Fweddi]

Stage 2 of rolling out variant headlines rendered through the platform test fronts-and-curation-editorial-headline-test: #16554.

[github-actions]

Deploy build 30678 of dotcom:rendering-all to CODE

All deployment options

• Deploy build 30678 of dotcom:rendering-all to CODE
• Deploy parts of build 30678 to CODE by previewing it first
• What's on CODE right now?

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From guardian/actions-riff-raff.

[github-actions]

🚀 Image pushed to AWS ECR

Image digest: sha256:b6cb3fe7770f98b078b575fd6e09e24463fd7aa1c5555dbffb85a58a7a4840d2

🐛 Run the image locally

The following can be used to run the image locally:

# Refer to image using the immutable digest. Find alternatives below.
IMAGE_IDENTIFIER="@sha256:b6cb3fe7770f98b078b575fd6e09e24463fd7aa1c5555dbffb85a58a7a4840d2"

# Refer to image using branch tag
# IMAGE_IDENTIFIER=":branch-fp-headline-test-rollout-stage-3"

# Refer to image using build tag
# IMAGE_IDENTIFIER=":build-30678"

# Refer to image via the GitHub commit SHA tag
# IMAGE_IDENTIFIER=":sha-5e3f6c46d13cd8b31dd5d9a8476c32d8157c0a0a"

# Set environment variables for the AWS CLI
AWS_PROFILE="<A_PROFILE_FROM_JANUS>"
AWS_DEFAULT_REGION="eu-west-1"

IMAGE_ACCOUNT_ID=$(aws ssm get-parameter --name /organisation/accounts/deployTools --query "Parameter.Value" --output text)
REGISTRY="${IMAGE_ACCOUNT_ID}.dkr.ecr.${AWS_DEFAULT_REGION}.amazonaws.com"
IMAGE="${REGISTRY}/guardian/dotcom-rendering${IMAGE_IDENTIFIER}"

# Login to AWS ECR https://docs.aws.amazon.com/AmazonECR/latest/userguide/registry_auth.html
aws ecr get-login-password | docker login --username AWS --password-stdin $REGISTRY

# Pull the image
docker pull $IMAGE

# Run the image. You'll likely need to set additional flags. See https://docs.docker.com/reference/cli/docker/container/run.
docker run $IMAGE

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From guardian/actions-publish-image.

[github-actions]

Deploy build 2942 of dotcom:ab-testing to CODE

All deployment options

• Deploy build 2942 of dotcom:ab-testing to CODE
• Deploy parts of build 2942 to CODE by previewing it first
• What's on CODE right now?

---

From guardian/actions-riff-raff.

[abeddow91]

To confirm, this will roll out to 50% of users - so two 25% buckets.

We'll need one final PR to roll out to 100%. This can be expressed as audienceSize: 100 / 100, or audienceSize: 1