AWS gitlab runner autoscaling

config.toml

concurrent = 4
check_interval = 0

[session_server]
  session_timeout = 1800

[[runners]]
  name = "Autoscale runner"
  limit = 8
  url = "https//gitlab.com/"
  token = "Your Token Here"
  executor = "docker+machine"
  [runners.custom_build_dir]
  [runners.docker]
    tls_verify = false
    image = "alpine:latest"
    privileged = true
    disable_entrypoint_overwrite = false
    oom_kill_disable = false
    disable_cache = true
    volumes = ["/cache"]
    shm_size = 0
  [runners.cache]
    Type = "s3"
    Shared = true
    [runners.cache.s3]
      ServerAddress = "s3.amazonaws.com"
      AccessKey = "<your AWS Access Key ID>"
      SecretKey = "<your AWS Secret Access Key>"
      BucketName = "<the bucket where your cache should be kept>"
      BucketLocation = "ap-southeast-1"
    [runners.cache.gcs]
  [runners.machine]
    IdleCount = 0
    IdleTime = 60
    MachineDriver = "amazonec2"
    MachineName = "gitlab-docker-machine-%s"
    MachineOptions = ["amazonec2-access-key=XXXX","amazonec2-secret-key=XXXX","amazonec2-region=ap-southeast-1", "amazonec2-vpc-id=XXXX", "amazonec2-subnet-id=XXXX", "amazonec2-zone=XXXX", "amazonec2-ami=ami-xxxxxxxxxxxx", "amazonec2-use-private-address=true", "amazonec2-tags=runner-manager-name,gitlab-aws-autoscaler,gitlab,true,gitlab-runner-autoscale,true", "amazonec2-security-group=docker-machine-scaler", "amazonec2-instance-type=m4.large", "amazonec2-request-spot-instance=true", "amazonec2-spot-price=0.04"]
    OffPeakTimezone = ""
    OffPeakIdleCount = 0
    OffPeakIdleTime = 1200