Revert "[FLINK-34194][ci] Updates test CI container to be based on Ubuntu 22.04"

This reverts commit 2b94a57.

Author: XComp

.github/workflows/docs.yml

@@ -49,7 +49,7 @@ jobs:
           fi
       - name: Build documentation
         run: |
-          docker run --rm --volume "$PWD:/root/flink" mapohl/flink-ci:FLINK-34194 bash -c "cd /root/flink && ./.github/workflows/docs.sh"
+          docker run --rm --volume "$PWD:/root/flink" chesnay/flink-ci:java_8_11_17_21_maven_386 bash -c "cd /root/flink && ./.github/workflows/docs.sh"
       - name: Upload documentation
         uses: burnett01/[email protected]
         with:

azure-pipelines.yml

@@ -39,7 +39,7 @@ resources:
   # Container with SSL to have the same environment everywhere.
   # see https://github.com/apache/flink-connector-shared-utils/tree/ci_utils
   - container: flink-build-container
-    image: mapohl/flink-ci:FLINK-34194
+    image: chesnay/flink-ci:java_8_11_17_21_maven_386
     # On AZP provided machines, set this flag to allow writing coredumps in docker
     options: --privileged
 
@@ -73,16 +73,16 @@ stages:
         parameters: # see template file for a definition of the parameters.
           stage_name: ci_build
           test_pool_definition:
-            vmImage: 'ubuntu-22.04'
+            vmImage: 'ubuntu-20.04'
           e2e_pool_definition:
-            vmImage: 'ubuntu-22.04'
+            vmImage: 'ubuntu-20.04'
           environment: PROFILE="-Dflink.hadoop.version=2.10.2"
           run_end_to_end: false
           container: flink-build-container
           jdk: 8
       - job: docs_404_check # run on a MSFT provided machine
         pool:
-          vmImage: 'ubuntu-22.04'
+          vmImage: 'ubuntu-20.04'
         steps:
           - task: GoTool@0
             inputs:

tools/azure-pipelines/build-apache-repo.yml

@@ -39,7 +39,7 @@ resources:
   # Container with SSL to have the same environment everywhere.
   # see https://github.com/apache/flink-connector-shared-utils/tree/ci_utils
   - container: flink-build-container
-    image: mapohl/flink-ci:FLINK-34194
+    image: chesnay/flink-ci:java_8_11_17_21_maven_386
 
 variables:
   MAVEN_CACHE_FOLDER: $(Pipeline.Workspace)/.m2/repository