我已经在NixOS 22.05上安装了Kubernetes和Minikube。但我无法启动Kubernetes：

minikube start --driver=docker

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输出量：

😄  minikube v1.25.2 on Nixos 22.05 (Quokka)
    ▪ MINIKUBE_WANTUPDATENOTIFICATION=false
✨  Using the docker driver based on user configuration

💣  Exiting due to PROVIDER_DOCKER_NEWGRP: "docker version --format -" exit status 1: Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get "http://%2Fvar%2Frun%2Fdocker.sock/v1.24/version": dial unix /var/run/docker.sock: connect: permission denied
💡  Suggestion: Add your user to the 'docker' group: 'sudo usermod -aG docker $USER && newgrp docker'
📘  Documentation: https://docs.docker.com/engine/install/linux-postinstall/

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我按照建议将我添加到组docker：

sudo groupadd docker

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输出量：

[sudo] password for t:
groupadd: group 'docker' already exists

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还有：

sudo gpasswd -a $USER docker

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输出量：

Adding user t to group docker

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还有：

newgrp docker

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但它仍然不起作用：

minikube start --driver=docker

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输出量：

😄  minikube v1.25.2 on Nixos 22.05 (Quokka)
    ▪ MINIKUBE_WANTUPDATENOTIFICATION=false
✨  Using the docker driver based on user configuration

💣  Exiting due to PROVIDER_DOCKER_NEWGRP: "docker version --format -" exit status 1: Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get "http://%2Fvar%2Frun%2Fdocker.sock/v1.24/version": dial unix /var/run/docker.sock: connect: permission denied
💡  Suggestion: Add your user to the 'docker' group: 'sudo usermod -aG docker $USER && newgrp docker'
📘  Documentation: https://docs.docker.com/engine/install/linux-postinstall/

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我该怎么办？