[runner] Back up and restore ~/.ssh files
#2261
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Preserve `~/.ssh` directory state, namely `environment` and
`authorized_keys` files, as follows:
Before a job started:
* If `<file>` exists:
- rename `<file>` to `<file>.dstack.bak`
- copy backup to a new file with original name `<file>`
* If `<file>` does not exist: remember this
After the job finished:
* If `<file>` existed: rename `<file>.dstack.bak` back to `<file>`
* If `<file>` did not exist: remove `<file>`
Fixes: #2257
r4victor
approved these changes
Feb 4, 2025
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Preserve
~/.sshdirectory state, namelyenvironmentandauthorized_keysfiles, as follows:Before a job started:
<file>exists:<file>to<file>.dstack.bak<file><file>does not exist: remember thisAfter the job finished:
<file>existed: rename<file>.dstack.bakback to<file><file>did not exist: remove<file>Fixes: #2257