Dispatch command to k8s

command.yaml.tmpl

apiVersion: batch/v1
kind: Job
metadata:
  name: foo-command
spec:
  ttlSecondsAfterFinished: 60
  template:
    spec:
      containers:
      - name: foo-command
        image: production_command
        imagePullPolicy: "Never"
        command: "$COMMAND"
      restartPolicy: Never

runcmd.sh

#!/usr/bin/env bash

# Install this somewhere on PATH as runcmd, and invoke like so:
# USAGE: runcmd foo --flag=true --force path/to/file

COMMAND="$@" envsubst -no-unset -no-empty <command.yaml.tmpl | kubectl apply -f -