Use armv7-compatible Node Docker base

docker/Dockerfile

@@ -1,5 +1,5 @@
 # syntax=docker/dockerfile:1.7
-FROM node:25-bookworm-slim AS builder
+FROM node:22-bookworm-slim AS builder
 
 WORKDIR /app
 
@@ -16,7 +16,7 @@ COPY . .
 RUN npm run build
 RUN --mount=type=cache,target=/root/.npm npm prune --omit=dev --no-audit --no-fund
 
-FROM node:25-bookworm-slim
+FROM node:22-bookworm-slim
 
 WORKDIR /app
 

scripts/dev/docker.workflow.test.ts

@@ -24,4 +24,11 @@ describe('docker workflows', () => {
     expect(ciWorkflow).toContain('platforms: linux/arm/v7');
     expect(ciWorkflow).toContain('push: false');
   });
+
+  it('uses an armv7-capable node base image in the Dockerfile', () => {
+    const dockerfile = readFileSync(resolve(process.cwd(), 'docker/Dockerfile'), 'utf8');
+
+    expect(dockerfile).toContain('FROM node:22-bookworm-slim AS builder');
+    expect(dockerfile).toContain('FROM node:22-bookworm-slim');
+  });
 });