Docker: Automatically Launch sshd within a Docker Container

---
version: '3.4'
services:
  ubuntu-with-sshd:
    image: "ubuntu-with-sshd:latest"
    build:
      context: "."
      target: "ubuntu-with-sshd"
    networks:
      mynet:
        ipv4_address: 172.16.128.2
    ports:
      - "2222:22"
    privileged: true # Required for /usr/sbin/init
networks:
  mynet:
    ipam:
      config:
        - subnet: 172.16.128.0/24