startswith

startswith(str string, prefix string) bool

variable "branch" {
  description = "Current git branch"
  type        = string
}

task "deploy-preview" {
  description = "Deploy a preview environment for feature branches"
  condition   = startswith(var.branch, "feature/")
  commands = [
    "docker build -t myapp:preview-${replace(var.branch, "/", "-")} .",
    "kubectl apply -f k8s/preview/",
  ]
}