laradock 安装报错，问下这个怎么解决？

第一次启动执行
docker-compose up -d nginx mysql redis 出错了。

---> Running in 9de8460a4394
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0curl: (7) Failed to connect to raw.githubusercontent.com port 443: Connection refused
/bin/sh: 1: .: Can't open /home/laradock/.nvm/nvm.sh
ERROR: Service 'workspace' failed to build: The command '/bin/sh -c if [ ${INSTALL_NODE} = true ]; then     mkdir -p $NVM_DIR &&     curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.11/install.sh | bash         && . $NVM_DIR/nvm.sh         && nvm install ${NODE_VERSION}         && nvm use ${NODE_VERSION}         && nvm alias ${NODE_VERSION}         && if [ ${NPM_REGISTRY} ]; then         npm config set registry ${NPM_REGISTRY}         ;fi         && if [ ${INSTALL_NPM_GULP} = true ]; then         npm install -g gulp         ;fi         && if [ ${INSTALL_NPM_BOWER} = true ]; then         npm install -g bower         ;fi         && if [ ${INSTALL_NPM_VUE_CLI} = true ]; then         npm install -g @vue/cli         ;fi         && if [ ${INSTALL_NPM_ANGULAR_CLI} = true ]; then         npm install -g @angular/cli         ;fi         && ln -s `npm bin --global` /home/laradock/.node-bin ;fi' returned a non-zero code: 2