Run GitHub Actions on AWS c7g.4xlarge

Why this fits

• 16 vCPU and 32 GiB RAM — sized for workloads the default GitHub-hosted runners can't comfortably host, all on your own AWS account.
• Native ARM64 CI for multi-arch container images and Apple-silicon-adjacent builds.
• Ephemeral by default — each job gets a clean VM, no leaked state from previous PRs.

.cirun.yml

.cirun.yml

1runners:
2  - name: aws-c7g-4xlarge
3    cloud: aws
4    instance_type: c7g.4xlarge
5    # Use the ARM64 Ubuntu 22.04 LTS AMI for your region — SSM parameter
6    # /aws/service/canonical/ubuntu/server/22.04/stable/current/arm64/hvm/ebs-gp2/ami-id.
7    machine_image: ami-08b3b50194e3fab6e
8    labels:
9      - cirun-aws-c7g-4xlarge

Drop this in your repo root. The first workflow that requests the runner label spins this configuration up on your cloud account.