fix(ci): shrink env reuse build context (#2066)

scripts/artifact-publish.mjs

@@ -930,6 +930,33 @@ function envReuseDockerfile(baseImage, labels = [], recipe, service = null) {
   ].join("\n");
 }
 
+async function copyRepoFileToContext(contextDir, repoRelativePath, { required = true } = {}) {
+  const sourcePath = path.join(repoRoot, repoRelativePath);
+  const targetPath = path.join(contextDir, repoRelativePath);
+  try {
+    const content = await readFile(sourcePath);
+    await mkdir(path.dirname(targetPath), { recursive: true });
+    await writeFile(targetPath, content);
+    return true;
+  } catch (error) {
+    if (!required && error?.code === "ENOENT") return false;
+    throw error;
+  }
+}
+
+async function prepareEnvReuseBuildContext(tmpDir, normalizedRecipe, goCacheEnabled) {
+  const contextDir = path.join(tmpDir, "context");
+  await mkdir(contextDir, { recursive: true });
+  await copyRepoFileToContext(contextDir, "package.json");
+  await copyRepoFileToContext(contextDir, "package-lock.json", { required: false });
+  if (goCacheEnabled) {
+    await copyRepoFileToContext(contextDir, "go.mod");
+    await copyRepoFileToContext(contextDir, "go.sum", { required: false });
+  }
+  await copyRepoFileToContext(contextDir, normalizedRecipe.launcherPath);
+  return contextDir;
+}
+
 function normalizeEnvReuseRecipe(recipe) {
   assert.ok(recipe && typeof recipe === "object", "envRecipe must be provided by deploy.lanes.<lane>.envRecipe");
   const normalized = {
@@ -1283,6 +1310,10 @@ async function buildEnvReuseService({ args, repo, commitId, service, buildCreate
 
 async function buildEnvReuseServiceWithBuildkit({ args, service, ref, buildCreatedAt, buildSource, labels }) {
   const tmpDir = await mkdtemp(path.join(os.tmpdir(), `hwlab-env-reuse-${service.serviceId}-`));
+  const normalizedRecipe = normalizeEnvReuseRecipe(service.envReuseRecipe);
+  const goService = service?.runtimeKind === "go-service" || service?.artifactKind === "go-service";
+  const goCacheEnabled = Boolean(goService && normalizedRecipe.runtimeGoModCachePath && normalizedRecipe.runtimeGoBuildCachePath);
+  const contextDir = await prepareEnvReuseBuildContext(tmpDir, normalizedRecipe, goCacheEnabled);
   const metadataPath = path.join(tmpDir, "metadata.json");
   const dockerfilePath = path.join(tmpDir, "Dockerfile");
   const cacheRef = envReuseCacheRef(args.registryPrefix, service.serviceId);
@@ -1290,12 +1321,12 @@ async function buildEnvReuseServiceWithBuildkit({ args, service, ref, buildCreat
   const buildkitAddrArgs = args.buildkitAddr ? ["--addr", args.buildkitAddr] : [];
   const startedAt = Date.now();
   try {
-    await writeFile(dockerfilePath, envReuseDockerfile(args.baseImage, labels, service.envReuseRecipe, service));
+    await writeFile(dockerfilePath, envReuseDockerfile(args.baseImage, labels, normalizedRecipe, service));
     const argsList = [
       ...buildkitAddrArgs,
       "build",
       "--frontend", "dockerfile.v0",
-      "--local", `context=${repoRoot}`,
+      "--local", `context=${contextDir}`,
       "--local", `dockerfile=${tmpDir}`,
       "--opt", "filename=Dockerfile",
       "--metadata-file", metadataPath,