initial

.env

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+POSTGRES_USER=app
+POSTGRES_PASSWORD=appsecret
+POSTGRES_DB=messdb
+
+NODE_ENV=development
+PORT=8080
+DATABASE_URL=postgres://app:appsecret@db:5432/messdb
+
+APACHE_HTTP_PORT=8088

.gitignore

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+# Node
+node_modules/
+npm-debug.log
+
+# Docker
+db-data/
+*.pid
+
+# System
+.DS_Store
+*.swp

apache/Dockerfile

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+FROM httpd:2.4
+# Module aktivieren und vHost einbinden
+RUN sed -i \
+    -e 's/#LoadModule proxy_module/LoadModule proxy_module/' \
+    -e 's/#LoadModule proxy_http_module/LoadModule proxy_http_module/' \
+    -e 's/#LoadModule headers_module/LoadModule headers_module/' \
+    conf/httpd.conf
+COPY vhost.conf /usr/local/apache2/conf/extra/vhost.conf
+RUN echo 'Include conf/extra/vhost.conf' >> /usr/local/apache2/conf/httpd.conf

apache/vhost.conf

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+# Reverse-Proxy auf Node-API (Service-Name "api", Port 8080)
+<VirtualHost *:80>
+  ServerName localhost
+
+  # Optionale statische Dateien
+  DocumentRoot "/usr/local/apache2/htdocs"
+  <Directory "/usr/local/apache2/htdocs">
+    Require all granted
+    Options -Indexes
+  </Directory>
+
+  # Proxy Einstellungen
+  ProxyPreserveHost On
+  ProxyPass        /api/ http://api:8080/api/
+  ProxyPassReverse /api/ http://api:8080/api/
+
+  # Health passthrough
+  ProxyPass        /health http://api:8080/health
+  ProxyPassReverse /health http://api:8080/health
+
+  # CORS/Headers bei Bedarf
+  Header always set X-Frame-Options "SAMEORIGIN"
+  Header always set X-Content-Type-Options "nosniff"
+  Header always set Referrer-Policy "strict-origin-when-cross-origin"
+  Header always set X-Forwarded-Proto "http"
+  RequestHeader set X-Forwarded-Proto "http"
+
+  ErrorLog  /proc/self/fd/2
+  CustomLog /proc/self/fd/1 combined
+</VirtualHost>

api/Dockerfile

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+FROM node:20-alpine
+WORKDIR /app
+
+# Nur package.json kopieren
+COPY package.json ./
+
+# Statt npm ci: install ohne dev
+RUN npm install --omit=dev
+
+# App-Code
+COPY server.js ./
+
+ENV PORT=8080
+EXPOSE 8080
+CMD ["node", "server.js"]

api/package.json

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+{
+  "name": "messgeraet-api",
+  "version": "1.0.0",
+  "main": "server.js",
+  "type": "module",
+  "scripts": { "start": "node server.js" },
+  "dependencies": {
+    "express": "^4.19.2",
+    "pg": "^8.11.5"
+  }
+}

api/server.js

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+import express from "express";
+import pkg from "pg";
+const { Pool } = pkg;
+
+const app = express();
+app.use(express.json());
+
+const pool = new Pool({ connectionString: process.env.DATABASE_URL });
+
+app.get("/health", async (_req, res) => {
+  try { await pool.query("select 1"); res.json({ ok: true }); }
+  catch (e) { res.status(500).json({ ok: false, error: String(e) }); }
+});
+
+app.get("/api/hello", (_req, res) => res.json({ msg: "Hello from Node behind Apache" }));
+
+const port = process.env.PORT || 8080;
+app.listen(port, () => console.log(`API on :${port}`));

docker-compose.yml

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+# version: "3.9"
+
+services:
+  db:
+    image: postgres:16
+    container_name: pg-db
+    restart: unless-stopped
+    env_file: .env
+    environment:
+      POSTGRES_USER: ${POSTGRES_USER}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
+      POSTGRES_DB: ${POSTGRES_DB}
+    volumes:
+      - db-data:/var/lib/postgresql/data
+    ports:
+      - "5432:5432"
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER} -d ${POSTGRES_DB}"]
+      interval: 5s
+      timeout: 3s
+      retries: 10
+
+  api:
+    build:
+      context: ./api
+      dockerfile: Dockerfile
+    container_name: node-api
+    restart: unless-stopped
+    env_file: .env
+    environment:
+      PORT: ${PORT}
+      DATABASE_URL: ${DATABASE_URL}
+      NODE_ENV: ${NODE_ENV}
+    expose:
+      - "8080"              # nur im Compose-Netz
+    depends_on:
+      db:
+        condition: service_healthy
+
+  web:
+    build:
+      context: ./apache
+      dockerfile: Dockerfile
+    container_name: apache-web
+    restart: unless-stopped
+    env_file: .env
+    ports:
+      - "${APACHE_HTTP_PORT}:80"     # Host:8088 -> Apache:80
+    depends_on:
+      - api
+      
+  pgadmin:
+    image: dpage/pgadmin4:8
+    container_name: pg-admin
+    restart: unless-stopped
+    environment:
+      PGADMIN_DEFAULT_EMAIL: admin@example.com
+      PGADMIN_DEFAULT_PASSWORD: admin123
+    ports:
+      - "5050:80"
+    depends_on:
+      - db
+
+volumes:
+  db-data: