dive

dive is a container image inspection CLI centered on layer-by-layer exploration. It opens a fullscreen TUI by default to show file changes, image efficiency, and wasted space, and can also run headless for CI checks or JSON export.

• Open an image from Docker, Podman, or a Docker archive and inspect each layer's contents, build commands, and file-level changes.
• Find duplicated or leftover files that bloat an image, with efficiency and wasted-byte estimates that help guide Dockerfile cleanup.
• Build an image and jump straight into analysis, or gate CI on efficiency and wasted-space thresholds to catch regressions.

• The default experience is a fullscreen TUI, so the strongest agent use is assisted inspection rather than pure headless automation.
• There is a real non-interactive path: --json writes structured layer and inefficiency data to a file, and --ci or CI=true returns pass or fail exit codes for scripted checks.
• Fits container build workflows well when an agent needs to inspect image composition after a build, but it is narrower than general-purpose image build or registry CLIs.

• It needs access to a local image source such as Docker, Podman on Linux, or a Docker archive; it is not a remote registry inspection CLI by itself.
• The README still labels the project beta quality, and its image-efficiency score is an estimate rather than a strict guarantee of image quality.