Use `actions/cache@v4` with following params:
path: ".download/by-url-sha256/$(echo $location | sha256sum | cut -d' ' -f1)"
key: "image-$digest"
enableCrossOsArchive: true

To make the image cache cross-platform, the cache directory is specified using a relative path from the working directory, and the platform-specific cache directories are accessed via symbolic links.

This should reduce the cache size used by the CI.

Signed-off-by: Norio Nomura <[email protected]>

setup_cache_for_template: support url in template parameter

Signed-off-by: Norio Nomura <[email protected]>

…erdctl` archives

- Change cache key to `url-sha256:$sha256` for caching images without a digest
- Include image basename in the cache key
- Use `limactl validate --fill` to retrieve nerdctl archive info and set cache if needed
- `test.yml`: Change cache configuration to run after `make install`

Signed-off-by: Norio Nomura <[email protected]>

test.yml: Remove `normalize_template_path` since `hashFile` is no longer used.

Signed-off-by: Norio Nomura <[email protected]>

… versus previous method

This was created in response to the question at lima-vm#2508 (comment).

Signed-off-by: Norio Nomura <[email protected]>

calculate-cache.sh: `shfmt -s`

Signed-off-by: Norio Nomura <[email protected]>

calculate-cache.sh: extract `runs_on` and `template` from workflow file

Signed-off-by: Norio Nomura <[email protected]>

calculate-cache.sh: add DEBUG=1 to save collected information as yaml

Signed-off-by: Norio Nomura <[email protected]>

calculate-cache.sh: add descriptions and output examples to functions

Signed-off-by: Norio Nomura <[email protected]>

calculate-cache.sh: use `--jq` instead of `| jq`

Signed-off-by: Norio Nomura <[email protected]>

calculate-cache.sh: add some descriptions

Signed-off-by: Norio Nomura <[email protected]>

calculate-cache.sh: resolve shfmt issue

Signed-off-by: Norio Nomura <[email protected]>

calculate-cache.sh: mention response cache file

Signed-off-by: Norio Nomura <[email protected]>

calculate-cache.sh: add `select(.steps)|`

Signed-off-by: Norio Nomura <[email protected]>

refactor some common codes from `setup_cache_for_template` and `calculate-cache.sh` into `cache-common-inc.sh`

Signed-off-by: Norio Nomura <[email protected]>