Support deploy through SSH proxy

[erichard]

It seem the action does not support deployment through SSH proxy.

I try to deploy a stack on a swarm in a tailscale network. I use a SSH bastion which is allowed in the tailscale network.

Docker swarm can handle that without issues because it wiil use the ssh config file and the proxyJump directive. But the action fail because of the ssh-keyscan who does not use the ssh config.

In my use case, I have a step the configure SSH by providing the config and known_hosts files. So if the action provides a way to disable the keyscan, it may work.

[smashedr]

So to confirm, you want an option to disable the ssh-keyscan line?

ssh-keyscan -p "${INPUT_PORT}" -H "${INPUT_HOST}" >> "${SSH_DIR}/known_hosts"

If so I can hopefully get this added today.

[smashedr]

I have PR #35 open on this, the change was quicker than testing it, so Ill get around to that a little later.

Changes: https://github.com/cssnr/stack-deploy-action/pull/35/files#diff-e4d34fc353097073f2f6ebbdc1d89cbdac9f0edf5354442c2f884839a2e8afb3

In the meantime, feel free to try the changes out yourself.
Make sure to set the version in uses: to @keyscan and add the new option: disable_keyscan: true

- name: 'Stack Deploy Action'
  uses: cssnr/stack-deploy-action@keyscan
  with:
    disable_keyscan: true

Let me know if you have any other feedback.

[smashedr]

This feature has been released in version v1.4.0: https://github.com/cssnr/stack-deploy-action/releases/tag/v1.4.0

Let me know if I can do anything else.