- Fixes#901.
## Type of Change
- [x] Bug fix
- [x] New feature
- [ ] Breaking change
- [ ] Documentation update
## Motivation and Context
Previously `container image prune` called `ImageStore.prune()` (renamed
to `cleanupOrphanedBlobs()` in cz 0.15.0) which only removed orphaned
content blobs and never actually removed images.
This PR fixes that behavior so `container image prune` removes dangling
images by default, and with `-a` removes all unused images, not just
dangling ones.
## Testing
- [x] Tested locally
- [ ] Added/updated tests
- [ ] Added/updated docs
- Closes#884.
## Type of Change
- [ ] Bug fix
- [x] New feature
- [ ] Breaking change
- [ ] Documentation update
## Motivation and Context
This PR implements the `container system df` command to display disk
usage statistics for images, containers, and volumes, along with their
total count, active count, size, and reclaimable space for each resource
type.
Active resources are determined by container mount references and
running state, while reclaimable space is calculated from inactive or
stopped resources.
Example output:
```
~/container ❯ container system df
TYPE TOTAL ACTIVE SIZE RECLAIMABLE
Images 4 3 4.42 GB 516.5 MB (11%)
Containers 4 2 2.69 GB 1.51 GB (56%)
Local Volumes 3 2 208.5 MB 66.2 MB (32%)
```
I'll have some follow-on PRs that will add `-v/--verbose` flag for
detailed per-resource information, `--filter` flag for filtering output
by resource type, and a `--debug` flag for debug statistics like block
usage, clone counts etc.
## Testing
- [x] Tested locally
- [x] Added/updated tests
- [ ] Added/updated docs
Kathryn Baldauf