ci: build image with timestamp for flux

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

azure-pipelines.yml

@@ -417,11 +417,15 @@ stages:
             repository: 'authentik/server'
             command: 'build'
             Dockerfile: 'Dockerfile'
-            tags: 'gh-$(branchName)'
+            tags: |
+              gh-$(branchName)
+              gh-$(branchName)-$(timestamp)
             arguments: '--build-arg GIT_BUILD_HASH=$(Build.SourceVersion)'
         - task: Docker@2
           inputs:
             containerRegistry: 'beryjuorg-harbor'
             repository: 'authentik/server'
             command: 'push'
-            tags: 'gh-$(branchName)'
+            tags: |
+              gh-$(branchName)
+              gh-$(branchName)-$(timestamp)

scripts/az_do_set_branch.py

@@ -1,5 +1,6 @@
 """Helper script to get the actual branch name, docker safe"""
 import os
+from time import time
 
 env_pr_branch = "SYSTEM_PULLREQUEST_SOURCEBRANCH"
 default_branch = "BUILD_SOURCEBRANCHNAME"
@@ -9,3 +10,4 @@ if env_pr_branch in os.environ:
     branch_name = os.environ[env_pr_branch].replace("/", "-")
 
 print("##vso[task.setvariable variable=branchName]%s" % branch_name)
+print("##vso[task.setvariable variable=timestamp]%s" % int(time()))