在travis上的R容器上安装特定节点版本
Installing specific node version on R container on travis
因为我用的是Netlify CLI tools on travis, I need to have a node version above 8 but the R container I use only has 6.12 according to the error message. I saw that it is possible to specify the node version for java script projects and there is an answer for here on Whosebug, but I tried both and they did not work for my case. What is the proper way of installing a specific node version in an arbitrary travis container such that other applications can access it ? Or maybe even better, (how) can I make npm satisfy the minimal version dependency on node when installing the Netlify CLI tools? I have no prior experience with npm. You can find the version history of my .travis file here.
To install Netlify CLI, make sure you have Node.js version 8 or higher
基于 Netlify 的文档 here
Travis 的最快解决方案
Optionally, your repository can contain a .nvmrc file in the repository root to specify which single version of Node.js to run your tests against.
quote from the docs 说要将 .nvmrc 文件添加到项目的根目录，版本为
.nvmrc
8.14.0
注意：将版本替换为与您的项目兼容且满足所有要求的版本。此外，仅当 .travis.yml 文件中的 node_js 键未指定 nodejs 版本时，才会读取 .nvmrc 文件。
根据@talves 提供的解决方案，我发现我可以修改 before_script 步骤来安装特定版本的节点，例如8.14：
before_script:
- nvm install 8.14
- npm install -g netlify-cli
- Rscript -e 'blogdown::install_hugo()'
因为已经安装了 nvm 和 npm。要安装最新的稳定版本，请将上面的 8.14 替换为 node。这样，我就不需要 .nvmrc 文件了。
因为我用的是Netlify CLI tools on travis, I need to have a node version above 8 but the R container I use only has 6.12 according to the error message. I saw that it is possible to specify the node version for java script projects and there is an answer for .travis file here.
To install Netlify CLI, make sure you have Node.js version 8 or higher
基于 Netlify 的文档 here
Travis 的最快解决方案
Optionally, your repository can contain a .nvmrc file in the repository root to specify which single version of Node.js to run your tests against.
quote from the docs 说要将 .nvmrc 文件添加到项目的根目录，版本为
.nvmrc
8.14.0
注意：将版本替换为与您的项目兼容且满足所有要求的版本。此外，仅当 .travis.yml 文件中的 node_js 键未指定 nodejs 版本时，才会读取 .nvmrc 文件。
根据@talves 提供的解决方案，我发现我可以修改 before_script 步骤来安装特定版本的节点，例如8.14：
before_script:
- nvm install 8.14
- npm install -g netlify-cli
- Rscript -e 'blogdown::install_hugo()'
因为已经安装了 nvm 和 npm。要安装最新的稳定版本，请将上面的 8.14 替换为 node。这样，我就不需要 .nvmrc 文件了。