Fix Docker image generation (#88741)
Pass install channel when building nightly images
Pass `TRITON_VERSION` argument to install triton for nightly images
Fix `generate_pytorch_version.py` to work with unannotated tags and avoid failures like the following:
```
% git checkout nightly
% ./.github/scripts/generate_pytorch_version.py
fatal: No annotated tags can describe '93f15b1b54ca5fb4a7ca9c21a813b4b86ebaeafa'.
However, there were unannotated tags: try --tags.
Traceback (most recent call last):
File "/Users/nshulga/git/pytorch/pytorch-release/./.github/scripts/generate_pytorch_version.py", line 120, in <module>
main()
File "/Users/nshulga/git/pytorch/pytorch-release/./.github/scripts/generate_pytorch_version.py", line 115, in main
print(version_obj.get_release_version())
File "/Users/nshulga/git/pytorch/pytorch-release/./.github/scripts/generate_pytorch_version.py", line 75, in get_release_version
if not get_tag():
File "/Users/nshulga/git/pytorch/pytorch-release/./.github/scripts/generate_pytorch_version.py", line 37, in get_tag
dirty_tag = subprocess.check_output(
File "/Users/nshulga/miniforge3/lib/python3.9/subprocess.py", line 424, in check_output
return run(*popenargs, stdout=PIPE, timeout=timeout, check=True,
File "/Users/nshulga/miniforge3/lib/python3.9/subprocess.py", line 528, in run
raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '['git', 'describe']' returned non-zero exit status 128.
```
After the change nightly is reported as(due to autolabelling issue,
should be fixed by ttps://github.com/pytorch/test-infra/pull/1047 ):
```
% ./.github/scripts/generate_pytorch_version.py
ciflow/inductor/26921+cpu
```
Even for tagged release commits version generation was wrong:
```
% git checkout release/1.13
% ./.github/scripts/generate_pytorch_version.py
ciflow/periodic/79617-4848-g7c98e70d44+cpu
```
After the fix, it is as expected:
```
% ./.github/scripts/generate_pytorch_version.py
1.13.0+cpu
```
Pull Request resolved: https://github.com/pytorch/pytorch/pull/88741
Approved by: https://github.com/dagitses, https://github.com/msaroufim
