install_node_npm_yarn.sh

# https://nodejs.org/ja/download/package-manager/#debian-and-ubuntu-based-linux-distributions-enterprise-linux-fedora-and-snap-packages
# https://github.com/nodesource/distributions/blob/master/README.md

curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash - \
    && sudo apt-get install -y nodejs \
    && curl -sL https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add - \
    && echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list \
    && sudo apt-get update \
    && sudo apt-get install -y yarn \
    && echo 'PATH="$HOME/.yarn/bin:$PATH"' >> ~/.profile \
    && source ~/.profile

install_node_npm_yarn_for_pwd.sh

curl -fsSL https://raw.githubusercontent.com/nodejs/docker-node/master/12/alpine/Dockerfile | sed -e '/^FROM /d' -e 's/^ENV \(\S*\) /\1=/g' -e 's/^RUN //g' -e '/^CMD /d' -e '/  #/d' > install_node_npm_yarn_for_pwd.sh \
    && time bash install_node_npm_yarn_for_pwd.sh

this_is_working.sh

# Prevent PATH parameter-expantions.
cat <<'EOF' >> profile
# set PATH so it includes user's private bin if it exists
if [ -d "$HOME/.yarn/bin" ] ; then
    PATH="$HOME/.yarn/bin:$PATH"
fi
EOF