Slim down the setup created by setup-ubuntu.sh

This changes the docker image size from around 5.8 to 3.6 GB.

For those wanting more tools in the docker build environment sudo
is always available.

scripts/setup-ubuntu.sh

@@ -6,18 +6,17 @@ PACKAGES+=" ant" # Used by apksigner.
 PACKAGES+=" asciidoc"
 PACKAGES+=" automake"
 PACKAGES+=" bison"
-PACKAGES+=" clang" # Used by golang, useful to have same compiler building.
 PACKAGES+=" curl" # Used for fetching sources.
 PACKAGES+=" ed" # Used by bc
 PACKAGES+=" flex"
-PACKAGES+=" g++-multilib" # For building nodejs-current mkpeephole for 32-bit arm and i686.
+PACKAGES+=" gcc-multilib" # Used by pforth build for 32-bit arches.
 PACKAGES+=" gettext" # Provides 'msgfmt' which the apt build uses.
+PACKAGES+=" g++"
 PACKAGES+=" git" # Used by the neovim build.
 PACKAGES+=" gperf" # Used by the fontconfig build.
 PACKAGES+=" help2man"
 PACKAGES+=" intltool" # Used by qalc build.
 PACKAGES+=" libglib2.0-dev" # Provides 'glib-genmarshal' which the glib build uses.
-PACKAGES+=" libgnutls28-dev" # Needed by native build step of mariadb.
 PACKAGES+=" libtool-bin"
 PACKAGES+=" libncurses5-dev" # Used by mariadb for host build part.
 PACKAGES+=" lzip"
@@ -30,14 +29,16 @@ PACKAGES+=" pkg-config"
 PACKAGES+=" python3-docutils" # For rst2man, used by mpv.
 PACKAGES+=" python3-setuptools" # Needed by at least asciinema.
 PACKAGES+=" python3-sphinx" # Needed by notmuch man page generation.
+PACKAGES+=" ruby" # Needed to build ruby.
 PACKAGES+=" scons"
 PACKAGES+=" texinfo"
+PACKAGES+=" texlive-binaries" # Needed by texlive build.
 PACKAGES+=" xmlto"
 PACKAGES+=" xutils-dev" # Provides 'makedepend' which the openssl build uses.
 PACKAGES+=" libexpat1-dev" # Needed by ghostscript
 PACKAGES+=" libjpeg-dev" # Needed by ghostscript
 
-DEBIAN_FRONTEND=noninteractive sudo apt-get install -yq $PACKAGES
+DEBIAN_FRONTEND=noninteractive sudo apt-get install -yq --no-install-recommends $PACKAGES
 
 sudo mkdir -p /data/data/com.termux/files/usr
 sudo chown -R `whoami` /data