Add GoAccess metrics dashboard with WebSocket support

- Add GoAccess package to Docker container
- Create GoAccess startup script with real-time HTML generation
- Add metrics.ralsina.me server block with authentication
- Configure WebSocket proxy for live metrics updates
- Add password protection with .htpasswd
- Fix WebSocket URL to use proper HTTPS endpoint
- Update all server blocks to listen on 0.0.0.0:8080 for Fly.io compatibility

Co-Authored-By: z.ai LGM 4.5 <noreply@z.ai>

reverse_proxy/goaccess.sh

@@ -0,0 +1,49 @@
+#!/bin/sh
+
+# GoAccess real-time dashboard script
+# Serves metrics dashboard on port 7890 with WebSocket support
+
+echo "Starting GoAccess setup..."
+
+# Wait for nginx to start and create logs
+sleep 10
+
+# Create log directory if it doesn't exist
+mkdir -p /var/log/nginx
+
+# Create HTML output directory
+mkdir -p /usr/share/nginx/html/goaccess
+
+# Create a dummy access log if it doesn't exist
+touch /var/log/nginx/access.log
+
+echo "Starting GoAccess..."
+
+# Start GoAccess with real-time WebSocket support
+# Remove unsupported options and use valid ones
+goaccess /var/log/nginx/access.log \
+    --log-format=COMBINED \
+    --real-time-html \
+    --ws-url=wss://metrics.ralsina.me/ws \
+    --daemonize \
+    --output=/usr/share/nginx/html/goaccess/index.html &
+
+# Get the PID
+GOACCESS_PID=$!
+echo "GoAccess started with PID: $GOACCESS_PID"
+
+# Wait a moment and check if it's still running
+sleep 3
+if kill -0 $GOACCESS_PID 2>/dev/null; then
+    echo "GoAccess is running successfully"
+else
+    echo "GoAccess failed to start, trying static HTML method..."
+    # Alternative: generate static HTML every 30 seconds
+    while true; do
+        goaccess /var/log/nginx/access.log \
+            --log-format=COMBINED \
+            --output=/usr/share/nginx/html/goaccess/index.html
+        echo "Generated static report at $(date)"
+        sleep 30
+    done &
+fi