Occasional flake when setting up node

[mockdeep]

Orb version:

5.0.0

What happened:

We occasionally see flaky builds where node or NPM fails to install. For example, here's the output from one recent failure:

failure output

#!/bin/bash -eo pipefail
# Only install nvm if it's not already installed
if command -v nvm &> /dev/null; then
    echo "nvm is already installed. Skipping nvm install.";
else
    curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.37.2/install.sh | bash;
    
    echo 'export NVM_DIR="$HOME/.nvm"' >> "$BASH_ENV";
    echo '[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" --no-use' >> "$BASH_ENV";
    
    # shellcheck source=/dev/null
    source "$BASH_ENV";
fi

# See: https://github.com/nvm-sh/nvm#usage
if [ "$NODE_PARAM_VERSION" = "latest" ]; then
    # When no version is specified we default to the latest version of Node
    NODE_ORB_INSTALL_VERSION=$(nvm ls-remote | tail -n1 | grep -Eo 'v[0-9]+\.[0-9]+\.[0-9]+')
    nvm install "$NODE_ORB_INSTALL_VERSION" # aka nvm install node. We're being explicit here.
    nvm alias default "$NODE_ORB_INSTALL_VERSION"
    elif [ -n "$NODE_PARAM_VERSION" ]; then
    nvm install "$NODE_PARAM_VERSION"
    nvm alias default "$NODE_PARAM_VERSION"
    elif [ -f ".nvmrc" ]; then
    NVMRC_SPECIFIED_VERSION=$(<.nvmrc)
    nvm install "$NVMRC_SPECIFIED_VERSION"
    nvm alias default "$NVMRC_SPECIFIED_VERSION"
else
    nvm install --lts
    nvm alias default lts/*
fi

echo 'nvm use default &>/dev/null' >> "$BASH_ENV"

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 13527  100 13527    0     0  1016k      0 --:--:-- --:--:-- --:--:-- 1016k
=> Downloading nvm from git to '/home/circleci/.nvm'
=> Cloning into '/home/circleci/.nvm'...
ssh: connect to host github.com port 22: Connection timed out
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
Failed to clone nvm repo. Please report this!

Exited with code exit status 2

CircleCI received exit code 2

Expected behavior:

Node should reliably install in the container.