use build.sourceversion in cache image key (#15019)

### Description
Use build.sourceversion in docker image cache key.



### Motivation and Context
We used filpath as the cache key in #14496.
In most cases, the docker base image tag is latest.
So, the hash of the files couldn't be aware of the change of base image.
As the result, the docker image restored, but the image will still be
rebuilt .
The maintenance cost would be huge if we pin image hash in docker file.
For example,
https://quay.io/repository/pypa/manylinux2014_x86_64?tab=tags&tag=latest,
it's updated almost every week.
So far, the build.sourceversion is the right way to keep cache is
updated and valid.

tools/ci_build/get_docker_image.py

@@ -36,7 +36,7 @@ def parse_args():
         "--container-registry",
         help="The Azure container registry name. " "If not provided, no container registry will be used.",
     )
-    parser.add_argument("--repository", help="The image repository name.")
+    parser.add_argument("--repository", required=True, help="The image repository name.")
 
     parser.add_argument("--use_imagecache", action="store_true", help="use cached image in pipeline cache")
 

tools/ci_build/github/azure-pipelines/linux-cpu-aten-pipeline.yml

@@ -36,9 +36,6 @@ jobs:
       Repository: 'onnxruntimecpubuildaten'
       UseImageCacheContainerRegistry: false
       UsePipelineCache: true
-      DockerCacheKeys: 'tools/ci_build/github/linux/docker/Dockerfile.manylinux2014_aten_cpu, tools/ci_build/github/linux/docker/manylinux*,
-        tools/ci_build/github/linux/docker/scripts/**/*, tools/ci_build/github/linux/docker/build_scripts/**/*,
-        !tools/ci_build/github/linux/docker/scripts/deps.txt'
 
   - task: Cache@2
     inputs:

tools/ci_build/github/azure-pipelines/templates/get-docker-image-steps.yml

@@ -25,9 +25,6 @@ parameters:
 - name: IMAGE_CACHE_DIR
   type: string
   default: $(Agent.TempDirectory)/docker
-- name: DockerCacheKeys
-  type: string
-  default: 'tools/ci_build/github/linux/docker/**/*, !tools/ci_build/github/linux/docker/scripts/deps.txt'
 
 steps:
 
@@ -74,10 +71,11 @@ steps:
   - task: Cache@2
     displayName: Cache Docker Image Task
     inputs:
-      key: ' "${{ parameters.Repository }}" | ${{ parameters.DockerCacheKeys }} '
+      key: ' "${{ parameters.Repository }}" | "$(Build.SourceVersion)" '
       path: ${{ parameters.IMAGE_CACHE_DIR }}
       restoreKeys: |
-        "${{ parameters.Repository }}" | ${{ parameters.DockerCacheKeys }}
+        "${{ parameters.Repository }}" | "$(Build.SourceVersion)"
+        "${{ parameters.Repository }}"
       cacheHitVar: CACHE_RESTORED
     condition: eq('${{ parameters.UsePipelineCache }}', 'true')