我在ubuntu:18.04运行我的 nodejs 应用程序的容器中安装了 docker，我需要在这个容器中安装 docker，因为我需要对其他小应用程序进行 dockerize
她是我的 Dockerfile
FROM ubuntu:18.04
WORKDIR /app
COPY package*.json ./
# Install Nodejs
RUN apt-get update
RUN apt-get -y install curl wget dirmngr apt-transport-https lsb-release ca-certificates software-properties-common gnupg-agent
RUN curl -sL https://deb.nodesource.com/setup_12.x | bash -
RUN apt-get -y install nodejs
# Install Chromium
RUN wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add -
RUN sh -c 'echo "deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list'
RUN apt-get update
RUN apt-get install -y google-chrome-unstable fonts-ipafont-gothic …