feat: docker enterypoint, dockerfile and dynamic var for buid

Co-authored-by: Copilot <copilot@github.com>

Dockerfile

@@ -0,0 +1,25 @@
+FROM --platform=$BUILDPLATFORM node:lts-alpine3.23 AS builder
+
+WORKDIR /app
+
+COPY package*.json ./
+
+RUN npm install
+COPY . .
+RUN npm run build
+
+FROM --platform=$TARGETPLATFORM nginx:stable-alpine AS production
+
+RUN apk add --no-cache gettext
+
+RUN rm -rf /usr/share/nginx/html/*
+COPY --from=builder /app/dist/nowchess-frontend/browser /usr/share/nginx/html
+
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+
+COPY public/env.template.js /usr/share/nginx/html/env.template.js
+COPY docker-entrypoint.sh /docker-entrypoint.sh
+RUN chmod +x /docker-entrypoint.sh
+
+EXPOSE 80
+ENTRYPOINT ["/docker-entrypoint.sh"]

angular.json

@@ -58,6 +58,14 @@
               ],
               "outputHashing": "all"
             },
+            "staging": {
+              "fileReplacements": [
+                {
+                  "replace": "src/environments/environment.ts",
+                  "with": "src/environments/environment.staging.ts"
+                }
+              ]
+            },
             "development": {
               "fileReplacements": [
                 {
@@ -83,6 +91,9 @@
             "production": {
               "buildTarget": "nowchess-frontend:build:production"
             },
+            "staging": {
+              "buildTarget": "nowchess-frontend:build:staging"
+            },
             "development": {
               "buildTarget": "nowchess-frontend:build:development"
             }

docker-entrypoint.sh

@@ -0,0 +1,18 @@
+#!/bin/sh
+set -e
+
+# Replace placeholders in env.template.js with environment variables and write env.js
+TEMPLATE_PATH="/usr/share/nginx/html/env.template.js"
+TARGET_PATH="/usr/share/nginx/html/env.js"
+
+if [ -f "$TEMPLATE_PATH" ]; then
+  echo "Rendering runtime config from $TEMPLATE_PATH"
+  echo "Using environment variables:"
+  printenv
+  echo "----"
+  envsubst < "$TEMPLATE_PATH" > "$TARGET_PATH"
+else
+  echo "No runtime template found at $TEMPLATE_PATH, skipping"
+fi
+
+exec nginx -g 'daemon off;'

nginx.conf

@@ -0,0 +1,22 @@
+server {
+    listen       80;
+    server_name  localhost;
+
+    location / {
+        root   /usr/share/nginx/html;
+        index  index.html index.htm;
+        try_files $uri $uri/ /index.html;
+    }
+
+    location /env.js {
+        root /usr/share/nginx/html;
+        default_type application/javascript;
+        expires -1;
+        add_header 'Cache-Control' 'no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0';
+    }
+
+    error_page   500 502 503 504  /50x.html;
+    location = /50x.html {
+        root   /usr/share/nginx/html;
+    }
+}

package.json

@@ -4,7 +4,8 @@
   "scripts": {
     "ng": "ng",
     "start": "ng serve",
-    "build": "ng build",
+    "build": "ng build --configuration production",
+    "build:staging": "ng build --configuration staging",
     "watch": "ng build --watch --configuration development",
     "test": "ng test"
   },

public/env.template.js

@@ -0,0 +1,4 @@
+window.__RUNTIME_CONFIG__ = {
+  API_URL: "${API_URL}",
+  WEBSOCKET_URL: "${WEBSOCKET_URL}"
+};

src/app/core/config.loader.ts

@@ -0,0 +1,11 @@
+/**
+ * Load runtime configuration from window.__RUNTIME_CONFIG__
+ * This is injected by docker-entrypoint.sh at container startup
+ */
+export function loadRuntimeConfig() {
+  const config = (window as any).__RUNTIME_CONFIG__ || {};
+  return {
+    apiUrl: config.API_URL || '',
+    wsUrl: config.WEBSOCKET_URL || 'ws://localhost:8080'
+  };
+}

src/environments/environment.staging.ts

@@ -0,0 +1,11 @@
+import { loadRuntimeConfig } from '../app/core/config.loader';
+
+const runtimeConfig = loadRuntimeConfig();
+
+export const environment = {
+  production: true,
+  apiBaseUrl: runtimeConfig.apiUrl || 'https://st.nowchess.janis-eccarius.de',
+  accountServiceUrl: runtimeConfig.apiUrl || 'https://st.nowchess.janis-eccarius.de',
+  wsBaseUrl: runtimeConfig.wsUrl || 'wss://st.nowchess.janis-eccarius.de',
+  apiPath: '/api/board/game'
+};

src/environments/environment.ts

@@ -1,7 +1,11 @@
+import { loadRuntimeConfig } from '../app/core/config.loader';
+
+const runtimeConfig = loadRuntimeConfig();
+
 export const environment = {
-  production: true,
-  apiBaseUrl: '',
-  accountServiceUrl: '',
-  wsBaseUrl: 'ws://localhost:8080',
+  production: false,
+  apiBaseUrl: runtimeConfig.apiUrl || '',
+  accountServiceUrl: runtimeConfig.apiUrl || '',
+  wsBaseUrl: runtimeConfig.wsUrl,
   apiPath: '/api/board/game'
 };

src/index.html

@@ -6,6 +6,7 @@
   <base href="/">
   <meta name="viewport" content="width=device-width, initial-scale=1">
   <link rel="icon" type="image/x-icon" href="favicon.ico">
+  <script src="/env.js" defer></script>
 </head>
 <body>
   <app-root></app-root>