Expose frontend revision internally

Author: Ekwav

Dockerfile

@@ -19,7 +19,9 @@ RUN rm -rf orval.config.ts cypress.config.ts cypress/ docs/ scripts/ lighthouse-
 FROM gcr.io/distroless/nodejs24-debian13 AS runner
 
 WORKDIR /opt/app
+ARG APP_VERSION
 ENV NODE_ENV=production
+ENV APP_VERSION=${APP_VERSION}
 
 COPY --from=builder --chown=nonroot:nonroot /opt/app/next.config.js ./
 COPY --from=builder --chown=nonroot:nonroot /opt/app/public ./public

app/api/version/route.ts

@@ -0,0 +1,18 @@
+export const dynamic = 'force-dynamic'
+
+const internalHost = 'hypixel-react.sky.svc.cluster.local'
+
+export function GET(request: Request) {
+    const host = request.headers.get('host')?.split(':')[0]
+    if (host !== internalHost) return new Response(null, { status: 404 })
+
+    const version = process.env.APP_VERSION ?? ''
+    if (!/^[a-f0-9]{40}$/i.test(version)) return new Response('APP_VERSION is not configured', { status: 503 })
+
+    return new Response(version, {
+        headers: {
+            'Cache-Control': 'no-store',
+            'Content-Type': 'text/plain; charset=utf-8'
+        }
+    })
+}