Run shell script as EC2 user on Cloud formation User data

There's a couple different ways you can do it, but this was the one that worked best for me. Add this to your user-data script, minus the nvm stuff of course:

# Install nvm
sudo -u ec2-user  -i <<'EOF'

cd /home/ec2-user
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.1/install.sh | bash
source /home/ec2-user/.bashrc
nvm install 10.19.0
nvm use 10.19.0

EOF