fix: install runtime dependencies in Railway image

Dockerfile

@@ -1,7 +1,10 @@
-FROM node:22-alpine
+FROM node:24-alpine
 
 WORKDIR /app
 
+COPY package.json package-lock.json ./
+RUN npm ci --omit=dev --ignore-scripts
+
 COPY sdk/typescript/package.json sdk/typescript/package-lock.json ./sdk/typescript/
 RUN npm --prefix sdk/typescript ci
 

test/repo-cleanup.test.js

@@ -169,6 +169,19 @@ test("runtime scripts execute TypeScript entrypoints directly", async () => {
   assert.equal(tsconfig.compilerOptions.checkJs, undefined);
 });
 
+test("Railway Docker image installs root runtime dependencies", async () => {
+  const dockerfile = await readFile("Dockerfile", "utf8");
+
+  assert.match(dockerfile, /^FROM node:24-alpine$/m);
+  assert.match(dockerfile, /^COPY package\.json package-lock\.json \.\/$/m);
+  assert.match(dockerfile, /^RUN npm ci --omit=dev --ignore-scripts$/m);
+
+  const rootInstallIndex = dockerfile.indexOf("RUN npm ci --omit=dev --ignore-scripts");
+  const sourceCopyIndex = dockerfile.indexOf("COPY . .");
+  assert.ok(rootInstallIndex >= 0);
+  assert.ok(sourceCopyIndex > rootInstallIndex);
+});
+
 async function findSideBySideSourceDuplicates(roots) {
   const duplicates = [];