Proposal: Add build `--compression` flag
Open
Nobody has claimed this yet.
kind/enhancement
status/triage
- Dominant language
- Go
- Stars
- 4.5k
- Forks
- 682
- Avg merge
- 2d 14h
- Merged PRs (30d)
- 29
Description
Description
Add --compression flag as a shorthand for: -o type=image,compression=<X>
Examples
-docker build -t asdf -o type=image,compression=zstd
+docker build -t asdf --compression zstd
-docker build -t asdf -o type=image,compression=uncompressed
+docker build -t asdf --compression uncompressed
Further enhancements
Also supportcompression-level
-docker build -t asdf -o type=image,compression=zstd,compression-level=1
+docker build -t asdf --compression zstd:1
Shorthand for uncompressed value
Optionally, provide none/false value as a shorthand for uncompressed:
-docker build -t asdf -o type=image,compression=uncompressed
+docker build -t asdf --compression none
Short flag
-c/--compressed
-docker build -t asdf -o type=image,compression=uncompressed
+docker build -t asdf -c none
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by locating the build command's existing handling for the -o type=image output options and how CLI flags are tested. Define which requested forms are in scope, then verify that the selected --compression value produces the equivalent output option and that the documented examples are covered by tests.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- docker, go
- Domain
- build-system, cli
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100