Created Synology NAS setup (markdown)

Synology-NAS-setup.md

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+A recommended `docker-compose.yml` for Synology NAS
+
+```
+version: "3.9"
+services:
+  changedetection:
+    container_name: ChangeDetection
+    image: dgtlmoon/changedetection.io
+    mem_limit: 1g
+    cpu_shares: 768
+    security_opt:
+      - no-new-privileges:true
+    restart: on-failure:5
+    ports:
+      - 5054:5000
+    volumes:
+      - /volume1/docker/changedetection:/datastore:rw
+    environment:
+     - PLAYWRIGHT_DRIVER_URL=ws://playwright-chrome:3000/
+  playwright-chrome:
+    hostname: playwright-chrome
+    image: browserless/chrome:1.60-chrome-stable
+    restart: on-failure:5
+    mem_limit: 4g
+    environment:
+    - SCREEN_WIDTH=1920
+    - SCREEN_HEIGHT=1024
+    - SCREEN_DEPTH=16
+    - ENABLE_DEBUGGER=false
+    - PREBOOT_CHROME=true
+    - CONNECTION_TIMEOUT=300000
+    - MAX_CONCURRENT_SESSIONS=10
+    - CHROME_REFRESH_TIME=600000
+    - DEFAULT_BLOCK_ADS=true
+    - DEFAULT_STEALTH=true
+    - DEFAULT_IGNORE_HTTPS_ERRORS=true
+```