[devdocsgjs/add-gtksourceview4] Dockerfile: add gtksourceview4

[Andy Holmes <andyholmes src gnome org>]

commit 5c7042f7a70f690ade77d38d8b59d9523574fd4e
Author: Andy Holmes <andrew g r holmes gmail com>
Date:   Sun Sep 5 16:53:29 2021 -0700

    Dockerfile: add gtksourceview4

 Dockerfile                            | 8 ++++----
 assets/javascripts/gnome_news.json    | 4 ++++
 assets/stylesheets/global/_icons.scss | 1 +
 3 files changed, 9 insertions(+), 4 deletions(-)
---
diff --git a/Dockerfile b/Dockerfile
index b7b47bcf..71ef52b1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -9,7 +9,7 @@ RUN dnf install -y \
         gom-devel graphene-devel grilo-devel gsettings-desktop-schemas-devel \
         gsound-devel gspell-devel \
         gstreamer1-{,plugins-base-,plugins-bad-free-}devel gtk{2,3,4}-devel \
-        gtksourceview3-devel gupnp-devel gupnp-dlna-devel harfbuzz-devel \
+        gtksourceview{3,4}-devel gupnp-devel gupnp-dlna-devel harfbuzz-devel \
         ibus-devel keybinder3-devel libappindicator-gtk3-devel \
         libappstream-glib-devel libchamplain-devel libgcab1-devel \
         libgdata-devel libgda-devel libgudev-devel libgweather-devel \
@@ -95,9 +95,9 @@ RUN for docset in appindicator301 appstreamglib10 atk10 atspi20 cairo10 \
         gstcodecs10 gstcontroller10 gstgl10 gstinsertbin10 gstmpegts10 \
         gstnet10 gstpbutils10 gstplayer10 gstrtp10 gstrtsp10 gstsdp10 gsttag10 \
         gstvideo10 gstvulkan10 gstwebrtc10 gtk20 gtk30 gtk40 gtkchamplain012 \
-        gtkclutter10 gtkosxapplication10 gtksource30 gudev10 gupnp10 \
-        gupnpdlna20 gupnpdlnagst20 gvc10 gweather30 gxps01 handy1 ibus10 \
-        javascriptcore40 json10 keybinder30 meta8 nm10 notify07 pango10 \
+        gtkclutter10 gtkosxapplication10 gtksource30 gtksource40 gudev10 \
+        gupnp10 gupnpdlna20 gupnpdlnagst20 gvc10 gweather30 gxps01 handy1 \
+        ibus10 javascriptcore40 json10 keybinder30 meta8 nm10 notify07 pango10 \
         pangocairo10 pangoft210 pangoxft10 peas10 peasgtk10 polkit10 \
         polkitagent10 poppler018 rest07 restextras07 rsvg20 secret1 shell01 \
         soup24 soupgnome24 st10 telepathyglib012 tracker20 tracker30 \
diff --git a/assets/javascripts/gnome_news.json b/assets/javascripts/gnome_news.json
index 3a0a2dfa..70d23dc7 100644
--- a/assets/javascripts/gnome_news.json
+++ b/assets/javascripts/gnome_news.json
@@ -1,4 +1,8 @@
 [
+  [
+    "2021-09-05",
+    "New documentations: <a href='/gtksource40/'>GtkSourceView 4</a>"
+  ],
   [
     "2021-03-21",
     "New documentations: <a href='/cally8/'>Cally 8</a> (Mutter version), <a href='/clutter8/'>Clutter 8</a> 
(Mutter version), <a href='/clutterx118/'>ClutterX11 8</a> (Mutter version), <a href='/cogl8/'>Cogl 8</a> 
(Mutter version), <a href='/coglpango8/'>CoglPango 8</a> (Mutter version), <a href='/meta8/'>Mutter 8</a>"
diff --git a/assets/stylesheets/global/_icons.scss b/assets/stylesheets/global/_icons.scss
index 4b2a0975..8d6b9c74 100644
--- a/assets/stylesheets/global/_icons.scss
+++ b/assets/stylesheets/global/_icons.scss
@@ -299,6 +299,7 @@ convert public/icons/docs/{appstream,cairo,champlain,cheese,clutter,evince,evolu
 ._icon-gssdp10:before,
 ._icon-gtkosxapplication10:before,
 ._icon-gtksource30:before,
+._icon-gtksource40:before,
 ._icon-gudev10:before,
 ._icon-gupnp10:before,
 ._icon-gupnpdlna20:before,