Conda fails to install python=3.6 when building Docker container from Dockerfile

[pcrxn]

Conda is unable to install Python v3.6 when building the Docker container from the Dockerfile. I've attached the full error log here:
confindr-docker-build-fail.log

Briefly:

#10 0.904 Collecting package metadata (current_repodata.json): ...working... done
#10 3.676 Solving environment: ...working... failed with initial frozen solve. Retrying with flexible solve.
#10 4.399 Solving environment: ...working... failed with repodata from current_repodata.json, will retry with next repodata source.
#10 5.600 Collecting package metadata (repodata.json): ...working... done
#10 14.24 Solving environment: ...working... failed with initial frozen solve. Retrying with flexible solve.
Examining conflict for xz setuptools python urllib3 conda conda-content-trust cryptography pysocks tqdm charset-normalizer idna wheel colorama pycparser ruamel_yaml pyopenssl six conda-package-handling pycosat brotlipy cffi requests pip cerExamining conflict for xz sqlite python libgcc-ng cryptography libffi __glibc readline ruamel_yaml tk conda-package-handling pycosat brotlipy ncurses zlib yaml cffi openssl libstdcxx-ng:   2%|▏         | 1/44 [00:01<01:04,  1.49s/it]       Examining conflict for xz sqlite python libgcc-ng cryptography libffi __glibc readline ruamel_yaml tk conda-package-handExamining conflict for xz setuptools sqlite python urllib3 conda conda-content-trust libgcc-ng cryptography libffi pysocks tqdm charset-normalizer idna wheel readline colorama pycparser ruamel_yaml pyopenssl tk six conda-package-handling pyExamining conflict for xz setuptools sqlite python urllib3 conda conda-content-trust libgcc-ng cryptography libffi pysocks tqdm charset-normalizer idna wheel readline colorama pycparser ruamel_yaml pyopenssl tk six conda-package-handling pyExamining conflict for xz sqlite python _openmp_mutex libgcc-ng cryptography libffi readline ruamel_yaml _libgcc_mutex tk conda-package-handling pycosat brotlipy ncurses zlib yaml cffi openssl libgomp:   7%|▋         | 3/44 [00:03<00:24,  1Examining conflict for xz sqlite python _openmp_mutex libgcc-ng cryptography libffi readline ruamel_yaml _libgcc_mutex tk conda-package-handling pycosat brotlipy ncurses zlib yaml cffi openssl libgomp:   9%|▉         | 4/44 [00:03<00:37,  1Examining conflict for xz libgcc-ng readline yaml cffi sqlite openssl python cryptography libffi ruamel_yaml tk conda-package-handling pycosat brotlipy ncurses _openmp_mutex zlib:   9%|▉         | 4/44 [00:03<00:37,  1.06it/s]
Examining conflict for xz libgcc-ng readline yaml cffi sqlite openssl python cryptography libffi ruamel_yaml tk conda-paExamining conflict for tzdata setuptools urllib3 conda conda-content-trust cryptography pysocks tqdm charset-normalizer idna wheel colorama pycparser ruamel_yaml pyopenssl six conda-package-handling pycosat brotlipy cffi requests pip certifExamining conflict for tzdata setuptools urllib3 conda conda-content-trust cryptography pysocks tqdm charset-normalizer idna wheel colorama pycparser ruamel_yaml pyopenssl six conda-package-handling pycosat brotlipy cffi requests pip certifExamining conflict for wheel setuptools python pip conda:  14%|█▎        | 6/44 [00:05<00:24,  1.55it/s]

Examining conflict for setuptools sqlite python urllib3 conda conda-content-trust cryptography pysocks tqdm charset-normalizer idna wheel colorama pycparser ruamel_yaml pyopenssl six conda-package-handling pycosat brotlipy cffi requests pipExamining conflict for wheel requests setuptools urllib3 conda pip certifi:  18%|█▊        | 8/44 [00:07<00:32,  1.11it/s]
Examining conflict for wheel requests setuptools urllib3 conda pip certifi:  20%|██        | 9/44 [00:07<00:30,  1.15it/Examining conflict for setuptools python urllib3 ld_impl_linux-64 conda conda-content-trust cryptography pysocks tqdm charset-normalizer idna wheel colorama pycparser ruamel_yaml pyopenssl six conda-package-handling pycosat brotlipy cffi reExamining conflict for setuptools python urllib3 ld_impl_linux-64 conda conda-content-trust cryptography pysocks tqdm charset-normalizer idna wheel colorama pycparser ruamel_yaml pyopenssl six conda-package-handling pycosat brotlipy cffi reExamining conflict for setuptools python urllib3 conda conda-content-trust cryptography pysocks tqdm charset-normalizer idna wheel colorama pycparser ruamel_yaml pyopenssl six conda-package-handling pycosat brotlipy cffi requests pip certifExamining conflict for setuptools python urllib3 conda conda-content-trust cryptography pysocks tqdm charset-normalizer idna wheel colorama pycparser ruamel_yaml pyopenssl six conda-package-handling pycosat brotlipy cffi requests pip certifExamining conflict for setuptools sqlite python urllib3 conda conda-content-trust cryptography libffi pysocks tqdm charset-normalizer idna wheel readline colorama pycparser ruamel_yaml pyopenssl six conda-package-handling pycosat brotlipy nExamining conflict for setuptools sqlite python urllib3 conda conda-content-trust cryptography libffi pysocks tqdm charset-normalizer idna wheel readline colorama pycparser ruamel_yaml pyopenssl six conda-package-handling pycosat brotlipy nExamining conflict for setuptools python urllib3 conda conda-content-trust cryptography pysocks tqdm charset-normalizer idna wheel colorama pycparser ruamel_yaml pyopenssl six conda-package-handling pycosat brotlipy cffi requests pip openssExamining conflict for setuptools python urllib3 conda conda-content-trust cryptography pysocks tqdm charset-normalizer idna wheel colorama pycparser ruamel_yaml pyopenssl six conda-package-handling pycosat brotlipy cffi requests pip openssExamining conflict for setuptools sqlite python urllib3 conda conda-content-trust cryptography pysocks tqdm charset-normalizer idna wheel readline colorama pycparser ruamel_yaml pyopenssl six conda-package-handling pycosat brotlipy ncurses Examining conflict for setuptools sqlite python urllib3 conda conda-content-trust cryptography pysocks tqdm charset-normalizer idna wheel readline colorama pycparser ruamel_yaml pyopenssl six conda-package-handling pycosat brotlipy ncurses Examining conflict for setuptools urllib3 conda conda-content-trust cryptography pysocks tqdm charset-normalizer idna wheel colorama pycparser ruamel_yaml pyopenssl six conda-package-handling pycosat brotlipy cffi requests pip certifi:  32%Examining conflict for setuptools urllib3 conda conda-content-trust cryptography pysocks tqdm charset-normalizer idna wheel colorama pycparser ruamel_yaml pyopenssl six conda-package-handling pycosat brotlipy cffi requests pip certifi:  34%Examining conflict for setuptools python urllib3 conda conda-content-trust cryptography libffi pysocks tqdm charset-normalizer idna wheel colorama pycparser ruamel_yaml pyopenssl six conda-package-handling pycosat brotlipy cffi requests pipExamining conflict for setuptools python urllib3 conda conda-content-trust cryptography libffi pysocks tqdm charset-normalizer idna wheel colorama pycparser ruamel_yaml pyopenssl six conda-package-handling pycosat brotlipy cffi requests pipExamining conflict for setuptools python urllib3 conda conda-content-trust cryptography pysocks tqdm charset-normalizer idna wheel colorama pycparser ruamel_yaml pyopenssl tk six conda-package-handling pycosat brotlipy cffi requests pip cerExamining conflict for setuptools python urllib3 conda conda-content-trust cryptography pysocks tqdm charset-normalizer idna wheel colorama pycparser ruamel_yaml pyopenssl tk six conda-package-handling pycosat brotlipy cffi requests pip cerExamining conflict for setuptools python urllib3 conda-content-trust cryptography pysocks tqdm ca-certificates idna wheel colorama pycparser ruamel_yaml pyopenssl six conda-package-handling pycosat cffi requests pip openssl certifi:  39%|██Examining conflict for setuptools python urllib3 conda-content-trust cryptography pysocks tqdm ca-certificates idna wheel colorama pycparser ruamel_yaml pyopenssl six conda-package-handling pycosat cffi requests pip openssl certifi:  41%|██Examining conflict for setuptools sqlite python urllib3 conda conda-content-trust cryptography pysocks tqdm charset-normalizer idna wheel colorama pycparser ruamel_yaml pyopenssl tk six conda-package-handling pycosat brotlipy zlib cffi requExamining conflict for setuptools sqlite python urllib3 conda conda-content-trust cryptography pysocks tqdm charset-normalizer idna wheel colorama pycparser ruamel_yaml pyopenssl tk six conda-package-handling pycosat brotlipy zlib cffi requExamining conflict for setuptools sqlite python urllib3 conda conda-content-trust cryptography pysocks tqdm charset-normalizer idna wheel readline colorama pycparser ruamel_yaml pyopenssl six conda-package-handling pycosat brotlipy cffi reqExamining conflict for setuptools sqlite python urllib3 conda conda-content-trust cryptography pysocks tqdm charset-normalizer idna wheel readline colorama pycparser ruamel_yaml pyopenssl six conda-package-handling pycosat brotlipy cffi reqExamining conflict for python sqlite:  45%|████▌     | 20/44 [00:24<00:36,  1.50s/it]

Examining conflict for urllib3 conda cryptography pyopenssl conda-content-trust six conda-package-handling:  55%|█████▍ Examining conflict for urllib3 conda cryptography pyopenssl conda-content-trust six conda-package-handling:  57%|█████▋ Examining conflict for urllib3 conda requests pyopenssl:  57%|█████▋    | 25/44 [00:25<00:11,  1.72it/s]
Examining conflict for urllib3 conda-content-trust cryptography pyopenssl:  59%|█████▉    | 26/44 [00:25<00:09,  1.81it/Examining conflict for urllib3 conda-content-trust cryptography pyopenssl:  61%|██████▏   | 27/44 [00:25<00:07,  2.24it/Examining conflict for requests urllib3 conda cryptography pyopenssl conda-content-trust:  61%|██████▏   | 27/44 [00:25<Examining conflict for requests urllib3 conda cryptography pyopenssl conda-content-trust:  64%|██████▎   | 28/44 [00:25<Examining conflict for cffi urllib3 cryptography pyopenssl conda-content-trust brotlipy:  64%|██████▎   | 28/44 [00:26<0Examining conflict for cffi urllib3 cryptography pyopenssl conda-content-trust brotlipy:  66%|██████▌   | 29/44 [00:26<0Examining conflict for requests urllib3 cryptography pyopenssl conda-content-trust:  66%|██████▌   | 29/44 [00:26<00:07,Examining conflict for requests urllib3 cryptography pyopenssl conda-content-trust:  68%|██████▊   | 30/44 [00:26<00:06,Examining conflict for idna requests urllib3 conda cryptography pyopenssl conda-content-trust:  68%|██████▊   | 30/44 [0Examining conflict for idna requests urllib3 conda cryptography pyopenssl conda-content-trust:  70%|███████   | 31/44 [0Examining conflict for urllib3 brotlipy requests:  70%|███████   | 31/44 [00:27<00:05,  2.45it/s]

#10 81.25 Found conflicts! Looking for incompatible packages.
#10 81.25 This can take several minutes.  Press CTRL-C to abort.
#10 81.25 failed
#10 81.25
#10 81.25 UnsatisfiableError: The following specifications were found to be incompatible with a past
#10 81.25 explicit spec that is not an explicit spec in this operation (python):
#10 81.25
#10 81.25   - python=3.6