Remove devscripts installation from install R scripts to reduce container size

[eitsupi]

Tracking this discussion, I see that rocker/drd doesn't like the devscripts dependencies (like python3) and only extracts checkbashisms and includes it in the source code.

rocker-org/rocker-versioned#167 (comment)
https://github.com/rocker-org/drd/blob/06ab465832ab7c77335d16f9e934d03bdb0493c4/checkbashisms

I suppose we could do the same thing here.

Originally posted by @eitsupi in #507 (comment)

[cboettig]

Right, I guess maybe there are some concerns with this not coming from the official ubuntu repo, not sure if that has any chance of interacting with version issues or whatnot. I do recall devscripts is kinda big, but then I think some of the other deps there might be used implicitly in later images too, so this could have downstream impacts on the stack? Maybe more evaluation is needed here.

[eitsupi]

Yeah, I think we need to update the tests to at least make sure rocker_scripts can run.

[eitsupi]

I guess maybe there are some concerns with this not coming from the official ubuntu repo

I think we can temporarily install the devscripts as $BUILDDEPS, copy the checkbashisms file (/usr/bin/checkbashisms) locally (to /usr/local/bin/checkbashisms, as like rocker/drd), and then remove devscripts as $BUILDDEPS.
Let's try this.

rocker-versioned2/scripts/install_R_source.sh

Lines 60 to 91 in 3edae7e

	BUILDDEPS="curl \
	default-jdk \
	libbz2-dev \
	libcairo2-dev \
	libcurl4-openssl-dev \
	libpango1.0-dev \
	libjpeg-dev \
	libicu-dev \
	libpcre2-dev \
	libpng-dev \
	libreadline-dev \
	libtiff5-dev \
	liblzma-dev \
	libx11-dev \
	libxt-dev \
	perl \
	rsync \
	subversion \
	tcl-dev \
	tk-dev \
	texinfo \
	texlive-extra-utils \
	texlive-fonts-recommended \
	texlive-fonts-extra \
	texlive-latex-recommended \
	texlive-latex-extra \
	x11proto-core-dev \
	xauth \
	xfonts-base \
	xvfb \
	wget \
	zlib1g-dev"