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feat: add eStargz compression support for faster image pulls (#1)

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- Add estargz boolean input parameter to action.yml
- Modify buildx output arguments to include estargz compression flags when enabled
- Add buildx version check (requires >= 0.10.0) and push requirement validation
- Update README.md with usage examples and documentation
- Requires push: true to be effective
- Compatible with existing output configurations

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Co-authored-by: Raunak Chowdhuri <raunak@reducto.ai>
This commit is contained in:
devin-ai-integration[bot] 2025-09-18 12:10:49 -07:00 • committed by GitHub
parent 4af38cd115
commit 527d67c3c7
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3 changed files with 62 additions and 2 deletions
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28
src/context.ts
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@ -57,6 +57,7 @@ export interface Inputs {
target: string;
ulimit: string[];
'github-token': string;
estargz: boolean;
}
export async function getInputs(): Promise<Inputs> {
@ -93,7 +94,8 @@ export async function getInputs(): Promise<Inputs> {
tags: Util.getInputList('tags'),
target: core.getInput('target'),
ulimit: Util.getInputList('ulimit', {ignoreComma: true}),
'github-token': core.getInput('github-token')
'github-token': core.getInput('github-token'),
estargz: core.getBooleanInput('estargz')
};
}
@ -208,11 +210,33 @@ async function getBuildArgs(inputs: Inputs, context: string, toolkit: Toolkit):
args.push('--no-cache-filter', noCacheFilter);
});
await Util.asyncForEach(inputs.outputs, async output => {
args.push('--output', output);
if (inputs.estargz && inputs.push) {
if (output.startsWith('type=registry') || output === 'type=registry') {
const estargzOutput = output.includes(',')
? `${output},compression=estargz,force-compression=true,oci-mediatypes=true`
: `${output},compression=estargz,force-compression=true,oci-mediatypes=true`;
args.push('--output', estargzOutput);
} else {
args.push('--output', output);
}
} else {
args.push('--output', output);
}
});
if (inputs.estargz && inputs.push && inputs.outputs.length === 0) {
args.push('--output', 'type=registry,compression=estargz,force-compression=true,oci-mediatypes=true');
}
if (inputs.platforms.length > 0) {
args.push('--platform', inputs.platforms.join(','));
}
if (inputs.estargz) {
if (!(await toolkit.buildx.versionSatisfies('>=0.10.0'))) {
core.warning("eStargz compression requires buildx >= 0.10.0; the input 'estargz' is ignored.");
} else if (!inputs.push) {
core.warning("eStargz compression requires push: true; the input 'estargz' is ignored.");
}
}
if (await toolkit.buildx.versionSatisfies('>=0.10.0')) {
args.push(...(await getAttestArgs(inputs, toolkit)));
} else {