Fixes#1738
`container cp` fails when the host source path is relative (e.g.
`container cp file foo:/root/`), because `NSString.standardizingPath`
only canonicalizes paths but does not make them absolute. The unchanged
relative path is then interpreted as `/file` (root-absolute) by
`URL(fileURLWithPath:)` on the runtime side.
Fixed by resolving relative paths against the current working directory
before use, matching the pattern already used by `container export`,
`container image save`, and `container image load`.
The same fix was also applied to the copy-out destination path (line
68), which had the same issue.
## Type of Change
- [x] Bug fix
- [ ] New feature
- [ ] Breaking change
- [ ] Documentation update
## Motivation and Context
`container cp file foo:/root/` fails with `"copyIn: source not found
'/file'"` because the relative path `file` is never expanded to an
absolute path. Using `$PWD/file` works, but relative paths should work
too — every other command in the codebase handles this correctly.
## Testing
- [x] Tested locally — builds and all existing tests pass
- [ ] Added/updated tests
- [ ] Added/updated docs
---------
Co-authored-by: jwhur <57657645+JaewonHur@users.noreply.github.com>
- Replace `URL` with `FilePath` in `container copy` (#1557).
In addition, make `copyIn`/`copyOut` API to use `String` for path as we
need to preserve the trailing slash to the `LinuxContainer.copy`---i.e.,
this trailing slash is used in `LinuxContainer.copy` to determine copy
behavior.
## Type of Change
- [ ] Bug fix
- [x] New feature
- [ ] Breaking change
- [x] Documentation update
## Motivation and Context
Adds the `container copy` (aliased as `cp`) command to copy files
between a running container and the local filesystem.
I saw [#1023](https://github.com/apple/container/pull/1023) and the
feedback from @dcantah — the previous attempt relied on tar being
installed inside the container.
This implementation takes the recommended approach:
file transfers go through the guest agent via the existing
`copyIn`/`copyOut` methods on the core `Containerization`, with no
dependency on container tooling.
## Testing
- [x] Tested locally
- [x] Added/updated tests
- [x] Added/updated docs
---------
Co-authored-by: jwhur <57657645+JaewonHur@users.noreply.github.com>
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