outposts: fix docker ssh integration

[BeryJu]

fix SSH integration being very finicky currently
currently the SSH Config is done by creating ~/.ssh/config which is then read by paramiko, but interpreted by docker-py and only certain params are actually parsed. Also there's only one config file that needs to be updated with multiple hosts

this switches the SSH Connection to use a shell process, hence gets rid of paramiko, uses openssh-client, and as such we can use /etc/ssh/ssh_config.d and just create a file per service-connection in there

closes #4314
closes #3679

[codecov]

Codecov Report

Patch coverage: 26.67% and project coverage change: -66.36 ⚠️

Comparison is base (13591fc) 92.69% compared to head (4e9a466) 26.33%.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #5362       +/-   ##
===========================================
- Coverage   92.69%   26.33%   -66.36%     
===========================================
  Files         506      506               
  Lines       25908    25893       -15     
===========================================
- Hits        24013     6816    -17197     
- Misses       1895    19077    +17182     

Flag	Coverage Δ
e2e	?
integration	26.33% <26.67%> (+0.01%)	⬆️
unit	?

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
authentik/outposts/docker_ssh.py	41.87% <23.08%> (+7.38%)	⬆️
authentik/outposts/controllers/docker.py	69.11% <50.00%> (-11.51%)	⬇️

... and 451 files with indirect coverage changes

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[github-actions]

authentik PR Installation instructions

Instructions for docker-compose

Add the following block to your .env file:

AUTHENTIK_IMAGE=ghcr.io/goauthentik/dev-server
AUTHENTIK_TAG=gh-outposts-fix-docker-ssh-integration-1682351885-4e9a466
AUTHENTIK_OUTPOSTS__CONTAINER_IMAGE_BASE=ghcr.io/goauthentik/dev-%(type)s:gh-%(build_hash)s

For arm64, use these values:

AUTHENTIK_IMAGE=ghcr.io/goauthentik/dev-server
AUTHENTIK_TAG=gh-outposts-fix-docker-ssh-integration-1682351885-4e9a466-arm64
AUTHENTIK_OUTPOSTS__CONTAINER_IMAGE_BASE=ghcr.io/goauthentik/dev-%(type)s:gh-%(build_hash)s

Afterwards, run the upgrade commands from the latest release notes.

Instructions for Kubernetes

Add the following block to your values.yml file:

authentik:
    outposts:
        container_image_base: ghcr.io/goauthentik/dev-%(type)s:gh-%(build_hash)s
image:
    repository: ghcr.io/goauthentik/dev-server
    tag: gh-outposts-fix-docker-ssh-integration-1682351885-4e9a466

For arm64, use these values:

authentik:
    outposts:
        container_image_base: ghcr.io/goauthentik/dev-%(type)s:gh-%(build_hash)s
image:
    repository: ghcr.io/goauthentik/dev-server
    tag: gh-outposts-fix-docker-ssh-integration-1682351885-4e9a466-arm64

Afterwards, run the upgrade commands from the latest release notes.

[BeryJu]

using the plain SSH connection works but is quite slow due to docker/docker-py#2966

[mrbreil]

any news on this

[DunklerPhoenix]

Heho
Is this still on the list to be merged?
Because I'm running into the same issues :D