Create a throwaway postgres instance

throwaway-postgres.zsh

function throwaway-postgres() {
  local port

  port="$((RANDOM%1000+40000))"
  
  docker info >/dev/null || return 1

  if ! docker run \
    --rm \
    --detach \
    --publish "$port:5432" \
    --env POSTGRES_DB=throwaway \
    --env POSTGRES_PASSWORD=throwaway \
    --env POSTGRES_USER=throwaway \
    postgres:alpine >/dev/null; then
    return 1
  fi

  if command -v pgwait > /dev/null; then
    if ! pgwait -timeout 30 -port "$port" throwaway throwaway throwaway; then
      return 1
    fi
  fi

  open "postgresql://throwaway:throwaway@localhost:$port/throwaway?statusColor=DAEBC2&enviroment=test"
}