Add docker cli

[cinlo]

Issue #, if available:

Description of changes:

• Added the package to the {cpu/gpu}.additional_packages_env.in files
• Added import test for the jupyter-activity-monitor-extension extension package
• Built the images successfully and tested on the image. Results were as expected.

conda-forge: https://anaconda.org/conda-forge/docker-cli

Test results:

dev-dsk-cindyxl-2a-78c20928 % python -m pytest -n auto -m cpu -vv -rs -k "docker-cli" --local-image-version 2.1.0           
======================================================= test session starts =======================================================
platform linux -- Python 3.12.7, pytest-8.3.3, pluggy-1.5.0 -- /home/cindyxl/anaconda3/envs/sagemaker-distribution/bin/python
cachedir: .pytest_cache
rootdir: /local/home/cindyxl/workplace/CurrentProject/dockerSMD2/sagemaker-distribution
configfile: pytest.ini
plugins: mock-3.14.0, xdist-3.6.1
8 workers [1 item]      
scheduling tests via LoadScheduling

test/test_dockerfile_based_harness.py::test_dockerfiles_for_cpu[docker-cli.test.Dockerfile-required_packages30] 
[gw0] [100%] PASSED test/test_dockerfile_based_harness.py::test_dockerfiles_for_cpu[docker-cli.test.Dockerfile-required_packages30] 

======================================================== warnings summary =========================================================
../../../../../../../home/cindyxl/anaconda3/envs/sagemaker-distribution/lib/python3.12/site-packages/boltons/timeutils.py:426
../../../../../../../home/cindyxl/anaconda3/envs/sagemaker-distribution/lib/python3.12/site-packages/boltons/timeutils.py:426
../../../../../../../home/cindyxl/anaconda3/envs/sagemaker-distribution/lib/python3.12/site-packages/boltons/timeutils.py:426
../../../../../../../home/cindyxl/anaconda3/envs/sagemaker-distribution/lib/python3.12/site-packages/boltons/timeutils.py:426
../../../../../../../home/cindyxl/anaconda3/envs/sagemaker-distribution/lib/python3.12/site-packages/boltons/timeutils.py:426
../../../../../../../home/cindyxl/anaconda3/envs/sagemaker-distribution/lib/python3.12/site-packages/boltons/timeutils.py:426
../../../../../../../home/cindyxl/anaconda3/envs/sagemaker-distribution/lib/python3.12/site-packages/boltons/timeutils.py:426
../../../../../../../home/cindyxl/anaconda3/envs/sagemaker-distribution/lib/python3.12/site-packages/boltons/timeutils.py:426
  /home/cindyxl/anaconda3/envs/sagemaker-distribution/lib/python3.12/site-packages/boltons/timeutils.py:426: DeprecationWarning: datetime.datetime.utcfromtimestamp() is deprecated and scheduled for removal in a future version. Use timezone-aware objects to represent datetimes in UTC: datetime.datetime.fromtimestamp(timestamp, datetime.UTC).
    EPOCH_NAIVE = datetime.utcfromtimestamp(0)

src/utils.py:4
src/utils.py:4
src/utils.py:4
src/utils.py:4
src/utils.py:4
src/utils.py:4
src/utils.py:4
src/utils.py:4
  /local/home/cindyxl/workplace/CurrentProject/dockerSMD2/sagemaker-distribution/src/utils.py:4: DeprecationWarning: conda.cli.python_api is deprecated and will be removed in 25.9. Use `conda.testing.conda_cli` instead.
    import conda.cli.python_api

-- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
================================================= 1 passed, 16 warnings in 11.68s =================================================
(sagemaker-distribution) 

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