解决 Laradock 安装时候出现 Can't open /home/laradock/.nvm/nvm.sh 的问题

Step 144/266 : RUN 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
 ---> Running in 999d30319924
  % 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

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