improve README
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@ -12,7 +12,10 @@ FROM hosttoday/ht-docker-node
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This image has nvm, node and npm in PATH.
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So if you need an image with a special node version (useful for CI/CA/CD) you can do
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```sh
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nvm install [node_version_number]
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nvm alias default [node_version_number]
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```Dockerfile
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FROM hosttoday/ht-docker-node
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RUN nvm install [node_version_number] \
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&& nvm alias default [node_version_number]
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```
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npm and node key words will now point to your selected version when you use your new image.
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