start master, volume servers, filer

Current Status
✅ Master: Healthy and running (port 9333)
✅ Filer: Healthy and running (port 8888)
✅ Volume Servers: All 6 servers running (ports 8080-8085)
🔄 Admin/Workers: Will start when dependencies are ready

docker/admin_integration/Dockerfile.admin

@@ -0,0 +1,33 @@
+# Final stage
+FROM alpine:latest
+
+# Install dependencies including Go for the entrypoint script
+RUN apk --no-cache add curl ca-certificates go
+
+WORKDIR /root/
+
+# Copy admin server binary (if it exists) or create a simple one
+COPY ./docker/admin_integration/admin-entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+# Create directories
+RUN mkdir -p /data /config /work
+
+# Expose admin port
+EXPOSE 9900
+
+# Set environment variables
+ENV MASTER_ADDRESS="master:9333"
+ENV ADMIN_PORT="9900" 
+ENV SCAN_INTERVAL="30s"
+ENV WORKER_TIMEOUT="5m"
+ENV TASK_TIMEOUT="30m"
+ENV MAX_RETRIES="3"
+ENV MAX_CONCURRENT_TASKS="5"
+
+# Health check
+HEALTHCHECK --interval=15s --timeout=5s --start-period=30s --retries=3 \
+  CMD curl -f http://localhost:9900/health || exit 1
+
+# Start admin server
+ENTRYPOINT ["/entrypoint.sh"]