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fix: persist OG image cache outside act runner workspace
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The cache was written to .cache/og/ relative to the workspace, which is
under /usr/local/git/.cache/act/<unique-hash>/hostexecutor/ — a new path
per run, so every build regenerated all images from scratch.

OG_CACHE_DIR env var now controls the cache path (resolved to an absolute
path). CI sets it to /usr/local/git/.cache/og, which survives between runs.
Locally it still defaults to .cache/og inside the project dir.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
svemagie
2026-04-01 10:00:46 +02:00
parent 06d8cab329
commit 93972aef35
4 changed files with 24 additions and 22 deletions
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10
lib/og-cli.js
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@@ -4,7 +4,7 @@
* CLI entry point for OG image generation.
* Runs as a separate process to isolate memory from Eleventy.
*
* Usage: node lib/og-cli.js <contentDir> <cacheDir> <siteName> [batchSize]
* Usage: node lib/og-cli.js <contentDir> <ogDir> <siteName> [batchSize]
*
* batchSize: Max images to generate per invocation (0 = unlimited).
* When set, exits after generating that many images so the caller
@@ -14,15 +14,15 @@
import { generateOgImages } from "./og.js";
const [contentDir, cacheDir, siteName, batchSizeStr] = process.argv.slice(2);
const [contentDir, ogDir, siteName, batchSizeStr] = process.argv.slice(2);
if (!contentDir || !cacheDir || !siteName) {
console.error("[og] Usage: node og-cli.js <contentDir> <cacheDir> <siteName> [batchSize]");
if (!contentDir || !ogDir || !siteName) {
console.error("[og] Usage: node og-cli.js <contentDir> <ogDir> <siteName> [batchSize]");
process.exit(1);
}
const batchSize = parseInt(batchSizeStr, 10) || 0;
const result = await generateOgImages(contentDir, cacheDir, siteName, batchSize);
const result = await generateOgImages(contentDir, ogDir, siteName, batchSize);
// Exit code 2 signals "batch complete, more images remain"
if (result?.hasMore) {

3
lib/og.js
View File

@@ -426,8 +426,7 @@ function scanContentFiles(contentDir) {
* @param {number} batchSize - Max images to generate (0 = unlimited)
* @returns {{ hasMore: boolean }} Whether more images need generation
*/
export async function generateOgImages(contentDir, cacheDir, siteName, batchSize = 0) {
const ogDir = join(cacheDir, "og");
export async function generateOgImages(contentDir, ogDir, siteName, batchSize = 0) {
mkdirSync(ogDir, { recursive: true });
const manifestPath = join(ogDir, "manifest.json");