ci: fix test_docker.sh failing due to empty .env (cherry-pick #12876)

[gcp-cherry-pick-bot]

Cherry-picked ci: fix test_docker.sh failing due to empty .env (#12876)

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.71%. Comparing base (22eaf97) to head (0368ca4).
Report is 4 commits behind head on version-2024.12.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@                 Coverage Diff                 @@
##           version-2024.12   #12877      +/-   ##
===================================================
- Coverage            92.79%   92.71%   -0.08%     
===================================================
  Files                  771      771              
  Lines                38854    38854              
===================================================
- Hits                 36053    36025      -28     
- Misses                2801     2829      +28     

Flag	Coverage Δ
e2e	48.60% <ø> (-0.11%)	⬇️
integration	24.56% <ø> (ø)
unit	90.39% <ø> (ø)

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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-0368ca454d68f532cd8a042c8a2dbd0bd1fe8489
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
global:
    image:
        repository: ghcr.io/goauthentik/dev-server
        tag: gh-0368ca454d68f532cd8a042c8a2dbd0bd1fe8489

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