---
version: "3.8"
services:
  app:
    environment:
      - SSH_KEY_FILE=/run/secrets/ssh_key
      - SSH_HOST_KEY
      - SSH_HOST_KEY_DISABLE
    secrets:
      - source: ssh_key
        mode: 0400

secrets:
  ssh_key:
    external: true
    name: ${STACK_NAME}_ssh_key_${SECRET_SSH_KEY_VERSION}