feat: add logging to Docker and iptables operations, fix iptables path

- Create /var/log/network-go directory in Dockerfile for log storage
- Add comprehensive logging to Docker client creation, network management, and container operations
- Add logging to iptables rule management (list, delete, etc.)
- Fix iptables executable path resolution in deleteMatchingLinesInContainer to use configured binary path

Dockerfile

@@ -18,6 +18,9 @@ RUN apk add --update --no-cache \
     util-linux \
     && rm -rf /var/cache/apk/*
 
+# Create log directory
+RUN mkdir -p /var/log/network-go
+
 COPY --from=builder /build/network-go /usr/local/bin/network-go
 
-CMD ["/usr/local/bin/network-go"]
+CMD ["/usr/local/bin/network-go"]