如何为自己的环境制作边框？

Question

\documentclass{book}
\title{Introduction to Latex}
\author{Me}
\date{}

\usepackage[dvipsnames]{xcolor}
\usepackage{exsheets}
\SetupExSheets{counter-within={chapter}}
\newenvironment{myquestion}
  {\question[name={myExercise}]}
  {\endquestion}


\newlength{\currentparindent}
\newenvironment{myset}
    {   \setlength{\currentparindent}{\parindent}
        \par
        \centering
        \begin{minipage}{\textwidth}
        \setlength{\parindent}{\currentparindent}
         \noindent\colorbox{Gray!50}{Exercise \thesubsection  }
        {\color{Black}   \hrule height 0.1ex} \vspace{0.5ex}}
    {

       \end{minipage}
    }  

\begin{document}
    \chapter{first}
        \section{start}
            \subsection{install}
                \begin{myset}
                 \begin{myquestion}
                Review the documentation for your compiler and determine what file naming convention it uses. Compile and Run the main program from page 2.
            \end{myquestion}
                \end{myset}

\end{document} 

两个问题：第一：我想为我的环境制作一个这样的边框

第二个：如何将颜色框拉伸到行尾。我知道第二个问题有答案将颜色框拉伸至行尾

但是接受的答案会使颜色框下方的文本远离颜色框，这是我不想要的。

Answer 1

xsim这是使用和 的概念上不同的版本tcolorbox。

\documentclass{book}
\title{Introduction to Latex}
\author{Me}
\date{}

\usepackage{xsim}
\usepackage[skins]{tcolorbox}
\xsimsetup{solution/print=false}
\DeclareExerciseEnvironmentTemplate{tcolorbox}{%
    \tcolorbox[enhanced,left=2pt,right=2pt,title=\GetExerciseName~\thesubsection,% append .\GetExerciseProperty{counter} to count inside subsection,
        colback=white,colframe=black,colbacktitle=gray!50,coltitle=black,sharp corners=all]%
}{\endtcolorbox}
\DeclareExerciseType{myset}{
    exercise-env=myset,
    solution-env=mysetsol,
    exercise-name=Exercise,
    solution-name=Solution,
    exercise-template=tcolorbox,
    solution-template=tcolorbox,
    within=chapter,
    the-counter={\arabic{myset}},
}

\newcounter{myquestion}[myset]
\newenvironment{myquestion}
  {\refstepcounter{myquestion}\textbf{Text here \themyquestion}\par}{}

\begin{document}
    \chapter{first}
        \section{start}
            \subsection{install}
                \begin{myset}
                 \begin{myquestion}
                Review the documentation for your compiler and determine what file naming convention it uses. Compile and Run the main program from page 2.
            \end{myquestion}
                \end{myset}

\end{document} 

Answer 2

像这样？这些依赖于framed包的框架可能会跨页面中断

\documentclass{book}
\title{Introduction to Latex}
\author{Me}
\date{}
\usepackage{framed}

\usepackage[svgnames, dvipsnames]{xcolor}
\usepackage{exsheets}
\SetupExSheets{counter-within={chapter}}
\newenvironment{myquestion}
{\question[name={myExercise}]}
{\endquestion}

\newlength{\currentparindent}
\newenvironment{myset}
{\setlength{\currentparindent}{\parindent}
\setlength{\FrameRule}{0.8pt}
\par
%\centering
\framed
\setlength{\parindent}{\currentparindent}\vspace*{-\FrameSep}
\noindent\hspace*{-\dimexpr\FrameSep+\FrameRule}\rlap{\rule[-0.8ex]{\dimexpr\linewidth+2\FrameSep+2\FrameRule}{0.1ex}}
\hspace*{\dimexpr2\FrameRule-\fontdimen2\font}
\colorbox{Gainsboro!60!Lavender}{%
\makebox[\dimexpr\textwidth+\FrameSep+\fontdimen2\font][l]%
{\hspace{\dimexpr\FrameSep+2\FrameRule-\fontdimen2\font} Exercise \thesubsection}
}%
{\vspace{-2ex}}
}
{
\endframed
}

\begin{document}

\chapter{first}
\section{start}
\subsection{install}
\begin{myset}
  \begin{myquestion}
    Review the documentation for your compiler and determine what file naming convention it uses. Compile and Run the main program from page 2.
  \end{myquestion}
\end{myset}

\end{document}