fix(ci): Fix Docker-in-Docker path mapping and HOME override

When running inside a GHA container, paths resolve to /__w/... which
only exists inside the container. Docker-in-Docker volume mounts need
host paths (/home/runner/work/...). Convert paths in registrySetup.ts.

Also move HOME=/root to docker -e flag since GHA overrides container
env settings with its own HOME=/github/home.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: mydea

dev-packages/e2e-tests/registrySetup.ts

@@ -4,7 +4,15 @@ import * as path from 'path';
 import { PUBLISH_PACKAGES_DOCKER_IMAGE_NAME, TEST_REGISTRY_CONTAINER_NAME, VERDACCIO_VERSION } from './lib/constants';
 
 const publishScriptNodeVersion = process.env.E2E_TEST_PUBLISH_SCRIPT_NODE_VERSION;
-const repositoryRoot = path.resolve(__dirname, '../..');
+
+// When running inside a GHA container, paths resolve to /__w/... which only
+// exists inside the container. Docker-in-Docker mounts need host paths.
+// The host maps /home/runner/work to /__w, so we convert back.
+function toHostPath(p: string): string {
+  return p.replace(/^\/__w\//, '/home/runner/work/');
+}
+
+const repositoryRoot = toHostPath(path.resolve(__dirname, '../..'));
 
 // https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#grouping-log-lines
 function groupCIOutput(groupTitle: string, fn: () => void): void {
@@ -35,7 +43,7 @@ export function registrySetup(): void {
         '-p',
         '4873:4873',
         '-v',
-        `${__dirname}/verdaccio-config:/verdaccio/conf`,
+        `${toHostPath(__dirname)}/verdaccio-config:/verdaccio/conf`,
         `verdaccio/verdaccio:${VERDACCIO_VERSION}`,
       ],
       { encoding: 'utf8', stdio: 'inherit' },