feat: add Docker deployment with HAProxy and blue-green strategy

docker-compose.yml

@@ -0,0 +1,24 @@
+services:
+  portfolio:
+    build: .
+    image: badbl0cks/portfolio
+    ports:
+      - "3000:3000"
+    env_file:
+      - .env
+    environment:
+      - PUID=1000
+      - PGID=1000
+    volumes:
+      - ./data:/app/data
+    restart: unless-stopped
+    networks:
+      proxynet:
+        aliases:
+          - portfolio-${RELEASE_TYPE}
+    healthcheck:
+      test: ["CMD", "curl", "-f", "-s", "--max-time", "5", "http://localhost:3000/api/health"]
+      interval: 30s
+      timeout: 15s
+      retries: 3
+      start_period: 120s