我有一个 Dockerfile,看起来像这样:
# Pull base image
FROM openjdk:8
ENV SCALA_VERSION 2.12.2
ENV SBT_VERSION 0.13.15
# Scala expects this file
RUN touch /usr/lib/jvm/java-8-openjdk-amd64/release
# Install Scala
## Piping curl directly in tar
RUN \
curl -fsL http://downloads.typesafe.com/scala/$SCALA_VERSION/scala-$SCALA_VERSION.tgz | tar xfz - -C /root/ && \
echo >> /root/.bashrc && \
echo 'export PATH=~/scala-$SCALA_VERSION/bin:$PATH' >> /root/.bashrc
# Install sbt
RUN \
curl -L -o sbt-$SBT_VERSION.deb http://dl.bintray.com/sbt/debian/sbt-$SBT_VERSION.deb && \
dpkg -i sbt-$SBT_VERSION.deb && \
rm sbt-$SBT_VERSION.deb && \
apt-get update && \
apt-get install sbt && \
sbt sbtVersion
# Install Docker
RUN \
# if we have older versions, let's get rid of them first
apt-get install docker
# Define working directory
WORKDIR /root
我想做的是,我希望能够将Docker安装到这个镜像中,并能够在其中运行docker命令。我该如何启动已安装的Docker实例?