script.sh

#!/bin/bash

# NVM needs the ability to modify your current shell session's env vars,
# which is why it's a sourced function

# found in the current user's .bashrc - update [user] below with your user!
export NVM_DIR="/home/ubuntu/.nvm"
[ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh"  # This loads nvm

# uncomment the line below if you need a specific version of node
# other than the one specified as `default` alias in NVM (optional)
nvm use 14 1> /dev/null

echo "Using nvm version $(nvm --version)"
echo "Using node version $(node --version)"
yarn start