feat: integrate React frontend with Go backend and containerize with Docker

- Rewrite Dockerfile with 4-stage build process:
  - Stage 1: Build React SPA with Bun (oven/bun:latest)
  - Stage 2: Build Go binary with embedded frontend (golang:1.25-alpine)
  - Stage 3: Fetch runtime dependencies (alpine:3.23)
  - Stage 4: Minimal runtime container (busybox:1.37.0-musl)
- Add comprehensive comments explaining each build stage
- Add build verification checks to ensure frontend embeds correctly
- Update compose.yaml with environment variables (FB_PORT=80, FB_ADDRESS=0.0.0.0)
- Add docker-compose.dev.yaml for development with hot reload support
- Modify http/static.go to serve 'index.html' instead of 'public/index.html'
- Final production image: ~50MB with non-root user and health checks
- Enable both production and development Docker workflows

compose.yaml

@@ -1,5 +1,10 @@
-# Run using:
+# WOLK - Modern File Browser with React Frontend and Go Backend
+# 
+# Build and run everything with:
 #   docker compose up --build
+#
+# Access the application at: http://localhost:8000
+# Default credentials: admin / (randomly generated, check logs)
 
 services:
   filebrowser:
@@ -7,31 +12,69 @@ services:
     build:
       dockerfile: Dockerfile
       context: .
+      # Build args (optional)
+      args:
+        - BUILDKIT_INLINE_CACHE=1
+    restart: unless-stopped
     networks:
       - filebrowser
     ports:
-      - 8000:80
+      - "8000:80"  # Host:Container - Access via http://localhost:8000
     volumes:
-      - filebrowser:/flux/vault
+      - filebrowser_data:/srv
+      - filebrowser_config:/config
+      - filebrowser_db:/database
     environment:
-      - REDIS_CACHE_URL=redis://default:filebrowser@redis:6379 # Use rediss:// for ssl
+      # Server configuration
+      - FB_PORT=80
+      - FB_ADDRESS=0.0.0.0
+      # Redis cache URL for multi-instance deployments (optional)
+      - REDIS_CACHE_URL=redis://default:filebrowser@redis:6379
+      # Token expiration time (optional)
+      - FB_TOKEN_EXPIRATION_TIME=2h
+    depends_on:
+      redis:
+        condition: service_healthy
+    healthcheck:
+      test: ["CMD", "wget", "--quiet", "--tries=1", "--spider", "http://localhost/health"]
+      interval: 10s
+      timeout: 5s
+      retries: 3
+      start_period: 10s
 
   redis:
-    container_name: redis
-    image: redis:latest
+    container_name: filebrowser_redis
+    image: redis:7-alpine
+    restart: unless-stopped
     networks:
       - filebrowser
     command:
       - sh
       - -c
       - |
-        cat > /tmp/users.acl <<EOF
+        cat > /tmp/users.acl <<'EOF'
         user default on >filebrowser ~* +@all
         EOF
         redis-server --aclfile /tmp/users.acl
+    volumes:
+      - redis_data:/data
+    healthcheck:
+      test: ["CMD", "redis-cli", "ping"]
+      interval: 5s
+      timeout: 3s
+      retries: 5
+      start_period: 5s
 
 networks:
   filebrowser:
+    driver: bridge
 
 volumes:
-  filebrowser:
+  filebrowser_data:
+    driver: local
+  filebrowser_config:
+    driver: local
+  filebrowser_db:
+    driver: local
+  redis_data:
+    driver: local