(1) Getting Started

   - Get docker
   - Docker Hub
     sign up
     why have an account on Docker Hub?

   - Images vs. Containers
   - We'll be using Ubuntu as our working example
   - docker image ls
     docker container ls
     docker container ps

(2) 


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\newpage \section{Another Section}
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\noindent
One analogy used is that an Docker image is like a digital photo, and
container is like the same photo printed out as many times as you
like. This analogy works further when considering that sometimes we
like to annotate a digital photo. Rather than modify the digital photo,
we can think of the annotated photo as:

\vspace{0.15in}
\var{Original File + Annotation Step}
\vspace{0.15in}

\noindent
Consider the photo on the left in Figure \ref{fig_dig_photo}

\vspace{0.15in}
\begin{consoleverb}
convert -pointsize 40 -fill yellow -draw 'text 550,940 "Life is a Journey"' sunset.png sunset2.png
\end{consoleverb}
\vspace{0.15in}

%\vspace{0.15in}
%\begin{figure}[H]
%  \centering 
%  \includegraphics[width=0.4\textwidth]{figures/sunset.png}
%  \includegraphics[width=0.4\textwidth]{figures/sunset2.png}
%  \caption{{\bf Launching Docker:} The first page for getting Docker on the
%    Mac should looking something like this (as it looks May 2020).}
%\label{fig_dig_photo}
%\end{figure}