fix(web): replace wget --spider with wget -qO /dev/null (BusyBox alpine compat)

wget --spider is GNU wget only; nginx:alpine uses BusyBox wget which does not
support --spider, causing the container healthcheck to fail and Traefik to
return 503 for dashboard.barodine.net.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

compose.coolify.yml

@@ -116,7 +116,7 @@ services:
       - 'traefik.http.middlewares.agenthub-dashboard-headers.headers.customrequestheaders.X-Forwarded-Proto=https'
       - 'traefik.http.routers.agenthub-dashboard.middlewares=agenthub-dashboard-headers'
     healthcheck:
-      test: ['CMD', 'wget', '--no-verbose', '--tries=1', '--spider', 'http://localhost/healthz']
+      test: ['CMD', 'wget', '-qO', '/dev/null', 'http://localhost/healthz']
       interval: 30s
       timeout: 5s
       retries: 3

web/Dockerfile

@@ -83,6 +83,6 @@ EOF
 EXPOSE 80
 
 HEALTHCHECK --interval=30s --timeout=5s --retries=3 --start-period=5s \
-  CMD wget --no-verbose --tries=1 --spider http://localhost/healthz || exit 1
+  CMD wget -qO /dev/null http://localhost/healthz || exit 1
 
 CMD ["nginx", "-g", "daemon off;"]