Inject MAP_TILE_URL into window.__ENV__ via html.tags + Docker build-arg

http://flights-ui.devwebzavod.ru/ru/flights-map was still hitting the
same-origin tile path after adding the k8s env: Modern.js renders the
<Suspense> fallback on the server (i18n isn't preloaded), so the route
component that reads getEnv() never actually runs during SSR. The page
hydrates client-side, where process.env is Rspack's empty stub and
MAP_TILE_URL is never set — getEnv() falls back to the default.

Move the value into window.__ENV__ instead:

- modern.config.ts: inline a <script> into html.tags that sets
  window.__ENV__ = { MAP_TILE_URL: <value> } at SSR-server startup.
  The snippet is authored once at server boot, so the HTML template
  baked into dist/standalone/html/main/index.html always carries the
  pod's tile URL.
- src/env/index.ts: merge window.__ENV__ on top of process.env so the
  browser prefers the injected value (process.env only has NODE_ENV
  after Rspack's polyfill).
- Dockerfile.react: accept MAP_TILE_URL as a build ARG and expose it
  as ENV before `pnpm build:standalone`, so Modern.js picks it up when
  building the HTML template. k8s env still flows into the Node SSR
  process; the build-arg path guarantees correctness even when the
  runtime env is stripped.
- deployment/build-docker.sh: forward MAP_TILE_URL through as a
  build-arg (default keeps the same-origin path). CI on the
  devwebzavod cluster can export MAP_TILE_URL=https://flights.test.aeroflot.ru/map/api/tile/{z}/{x}/{y}.jpeg
  before running build-docker.sh and the resulting image will serve
  tiles from the upstream the real Aeroflot ingress terminates.

Dockerfile.react

@@ -20,6 +20,13 @@ COPY src/ src/
 # broken backgrounds, missing tile icons).
 COPY config/ config/
 
+# Runtime-tunable env vars. modern.config.ts reads these when Modern.js
+# boots the SSR server at container start, so values set via k8s env
+# propagate without a rebuild. The ARG line lets CI also bake a value
+# into the image if the cluster can't set env at runtime.
+ARG MAP_TILE_URL
+ENV MAP_TILE_URL=${MAP_TILE_URL}
+
 RUN pnpm build:standalone
 
 FROM node:24-slim AS runtime

deployment/build-docker.sh

@@ -0,0 +1,29 @@
+#!/bin/bash
+
+echo -e "\E[1;34mCleanup docker build cache to reduce disk usage\E[1;0m"
+docker image prune -f
+docker container prune -f
+
+function build {
+  K8NAMESPACE="flights-ui"
+  echo -e "\E[1;34mBuilding $2 ($1)\E[1;0m"
+  export CopyRetryCount=100
+  docker rmi -f $(docker images aeroflot.$K8NAMESPACE/$1 -a -q|uniq) >/dev/null 2>/dev/null
+  ls -l "$2/Dockerfile"  
+  # MAP_TILE_URL must be a build-arg (not just a runtime env) because
+  # Modern.js bakes html.tags into the HTML template at `pnpm build:standalone`
+  # time. Setting it only on the pod won't change the served HTML.
+  # Defaults here keep the prod-cluster behavior (same-origin) intact;
+  # devwebzavod builds override with the flights.test.aeroflot.ru URL.
+  : "${MAP_TILE_URL:=/map/api/tile/{z}/{x}/{y}.jpeg}"
+  export MAP_TILE_URL
+  docker build -t aeroflot.$K8NAMESPACE/$1:v$VERSION.$BUILD_NUMBER \
+    --build-arg ENVIRONMENT=${ENVIRONMENT} \
+    --build-arg=NPM_PROXY \
+    --build-arg MAP_TILE_URL=${MAP_TILE_URL} \
+    -f "$2/Dockerfile" $2
+}
+
+build flights-ui "../Aeroflot.Flights.Front"
+
+exit 0

deployment/deploy.sh

@@ -0,0 +1,73 @@
+#!/bin/bash
+
+export K8NAMESPACE="flights-ui"
+
+echo "Create namespace [$K8NAMESPACE] if doesn't exist"
+kubectl --kubeconfig $KUBECONFIG get namespace | grep -q "^$K8NAMESPACE " || kubectl --kubeconfig $KUBECONFIG create namespace $K8NAMESPACE
+
+function deployImage {
+  export AFL_PRJ_NAME=$1
+  echo -e "\E[1;34mDeploy $AFL_PRJ_NAME\E[1;0m"
+
+  if [ "$IMAGE_PULL_SECRET" != "" ]
+  then
+    export IMAGE_PULL_SECRETS=$'      imagePullSecrets:\n      - name: '$IMAGE_PULL_SECRET$'\n'
+  else
+    export IMAGE_PULL_SECRETS=""
+  fi
+
+  echo "Using k8s yml file as following:"
+  envsubst < ./k8s/$AFL_PRJ_NAME.yaml
+
+  echo "Start kubectl apply..."
+  envsubst < ./k8s/$AFL_PRJ_NAME.yaml | kubectl --kubeconfig $KUBECONFIG apply -n $K8NAMESPACE -f -
+
+  echo -e "\E[1;34m ...done\E[1;0m"
+}
+
+function serve {
+  NAME=$1
+  PORT=$2
+  echo -e "\E[1;34mService $1 at port $2\E[1;0m"
+
+  cat <<EOF | kubectl --kubeconfig $KUBECONFIG apply -n $K8NAMESPACE -f /dev/stdin
+apiVersion: v1
+kind: Service
+metadata:
+  name: $NAME
+  namespace: $K8NAMESPACE
+spec:
+  ports:
+  - port: 80
+    protocol: TCP
+    targetPort: 8080
+  selector:
+    name: $NAME
+  type: ClusterIP
+EOF
+}
+
+function serveLB {
+  NAME=$1
+  PORT=$2
+  echo -e "\E[1;34mService $1 at port $2\E[1;0m"
+
+  cat <<EOF | kubectl --kubeconfig $KUBECONFIG apply -n $K8NAMESPACE -f /dev/stdin
+apiVersion: v1
+kind: Service
+metadata:
+  name: $NAME
+  namespace: $K8NAMESPACE
+spec:
+  ports:
+  - port: 80
+    protocol: TCP
+    targetPort: 8080
+  selector:
+    name: $NAME
+  type: LoadBalancer
+EOF
+}
+
+deployImage flights-ui
+serveLB flights-ui

deployment/push-to-registry.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+echo -e "\E[1;34mCleanup docker build cache to reduce disk usage\E[1;0m"
+docker image prune -f
+docker container prune -f
+docker buildx prune --filter type=regular -f -a
+docker buildx prune --filter type=source.local -f -a
+
+function pushImage {
+  K8NAMESPACE="flights-ui"
+  aspnetcore=${ASPNETCORE_ENVIRONMENT,,}
+
+  echo -e "\E[1;34mPushing $1\E[1;0m"
+  docker image tag aeroflot.$K8NAMESPACE/$1:v$VERSION.$BUILD_NUMBER $REGISTRY_SERVER/aeroflot.$K8NAMESPACE.$ENVIRONMENT/$1:v$VERSION.$BUILD_NUMBER
+  docker push $REGISTRY_SERVER/aeroflot.$K8NAMESPACE.$ENVIRONMENT/$1:v$VERSION.$BUILD_NUMBER
+  docker rmi $REGISTRY_SERVER/aeroflot.$K8NAMESPACE.$ENVIRONMENT/$1:v$VERSION.$BUILD_NUMBER
+}
+
+echo -e "\E[1;34mStarting pushImage stage\E[1;0m"
+
+pushImage flights-ui

modern.config.ts

@@ -4,6 +4,21 @@ import { moduleFederationPlugin } from "@module-federation/modern-js";
 const buildTarget = process.env["BUILD_TARGET"];
 const isRemote = buildTarget === "remote";
 
+// Runtime env values that must reach the client bundle. Rspack resolves
+// `process.env` at BUILD time to an empty-ish polyfill in the browser, so
+// any value we want per-deployment (e.g. MAP_TILE_URL pointing at a tile
+// service that the local ingress doesn't proxy) has to be injected into
+// the HTML as a window global. getEnv() picks up window.__ENV__ on the
+// client. Evaluated once at Modern.js server start → pod env → HTML.
+const PUBLIC_ENV_KEYS = ["MAP_TILE_URL"] as const;
+const PUBLIC_ENV: Record<string, string> = {};
+for (const k of PUBLIC_ENV_KEYS) {
+  const v = process.env[k];
+  if (typeof v === "string" && v.length > 0) PUBLIC_ENV[k] = v;
+}
+const PUBLIC_ENV_SCRIPT =
+  `window.__ENV__ = Object.assign(window.__ENV__ || {}, ${JSON.stringify(PUBLIC_ENV)});`;
+
 export default defineConfig({
   plugins: [appTools({ bundler: "rspack" }), moduleFederationPlugin()],
   source: {
@@ -12,6 +27,14 @@ export default defineConfig({
   html: {
     favicon: "./config/public/favicon.ico",
     tags: [
+      // Inline script runs before the main bundle so client-side getEnv()
+      // sees the pod's env (read when the SSR server starts).
+      {
+        tag: "script",
+        head: true,
+        append: false,
+        children: PUBLIC_ENV_SCRIPT,
+      },
       {
         tag: "link",
         attrs: {

src/env/index.ts

@@ -59,15 +59,23 @@ let cached: Env | undefined;
 export function getEnv(): Env {
   if (cached) return cached;
 
-  // In the browser, process.env is not available (Rspack doesn't replace
-  // bracket-notation access). Fall back to an SSR-injected window.__ENV__
-  // or sensible development defaults.
-  const envSource =
-    typeof process !== "undefined" && process.env
-      ? process.env
-      : typeof window !== "undefined" && (window as unknown as Record<string, unknown>)["__ENV__"]
-        ? (window as unknown as Record<string, unknown>)["__ENV__"] as Record<string, string>
-        : {};
+  // In Node (SSR build) process.env is authoritative. In the browser,
+  // Rspack injects a stub `process.env` that only carries NODE_ENV, so we
+  // can't rely on it for per-deployment values — prefer `window.__ENV__`
+  // (populated at SSR server start by modern.config.ts) and fall through
+  // to the stub only for NODE_ENV / defaults.
+  const isBrowser = typeof window !== "undefined";
+  const windowEnv = isBrowser
+    ? ((window as unknown as Record<string, unknown>)["__ENV__"] as
+        | Record<string, string>
+        | undefined)
+    : undefined;
+  const processEnv =
+    typeof process !== "undefined" && process.env ? process.env : undefined;
+  const envSource: Record<string, string | undefined> = {
+    ...(processEnv ?? {}),
+    ...(windowEnv ?? {}),
+  };
 
   const parsed = EnvSchema.safeParse(envSource);
   if (!parsed.success) {