Add healthcheck to nginx service in docker-compose

examples/excalidraw/docker-compose.yml

@@ -16,6 +16,13 @@ services:
         find /usr/share/nginx/html/assets -type f -name "*.js" -exec sed -i 's|https://oss-collab\.excalidraw\.com|'$$VITE_APP_WS_SERVER_URL'|g' {} +
         echo "Starting nginx..."
         nginx -g 'daemon off;'
+    stdin_open: true
+    healthcheck:
+      test: ["CMD-SHELL", "wget -qO- http://127.0.0.1:80/ >/dev/null 2>&1 || exit 1"]
+      interval: 30s
+      timeout: 5s
+      retries: 3
+      start_period: 20s
     environment:
       - NODE_ENV=production
       - VITE_APP_WS_SERVER_URL=https://draw2gether.example.com # define your custom url for selfhosted excalidraw-room below
@@ -35,6 +42,12 @@ services:
     expose:
       - 80
     restart: unless-stopped
+    healthcheck:
+      test: ["CMD-SHELL", "wget -qO- http://127.0.0.1:80/ >/dev/null 2>&1 || exit 1"]
+      interval: 30s
+      timeout: 5s
+      retries: 3
+      start_period: 20s    
     #networks:
     #  - proxy
     #labels: