Remove gfm admonitions plugin

The plugin doesn't work with include files. Implement via includes
instead.

Signed-off-by: Gerwin Klein <gerwin.klein@proofcraft.systems>

Gemfile

@@ -34,7 +34,6 @@ group :jekyll_plugins do
   gem 'jekyll-remote-theme'
   gem "jekyll-postcss-v2"
   gem "jekyll-inline-svg"
-  gem "jekyll-gfm-admonitions"
 end
 
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem

Gemfile.lock

@@ -7,7 +7,6 @@ GEM
     bigdecimal (3.1.9)
     colorator (1.1.0)
     concurrent-ruby (1.3.5)
-    cssminify (1.0.2)
     csv (3.3.4)
     em-websocket (0.5.3)
       eventmachine (>= 0.12.9)
@@ -70,10 +69,6 @@ GEM
       safe_yaml (~> 1.0)
       terminal-table (>= 1.8, < 4.0)
       webrick (~> 1.7)
-    jekyll-gfm-admonitions (1.2.0)
-      cssminify (~> 1.0)
-      jekyll (>= 3.0, < 5.0)
-      octicons (~> 19.8)
     jekyll-inline-svg (1.1.5)
       jekyll (>= 3.3, < 5.0)
       svg_optimizer (~> 0.3.0)
@@ -126,7 +121,6 @@ GEM
       racc (~> 1.4)
     nokogiri (1.18.8-x86_64-linux-musl)
       racc (~> 1.4)
-    octicons (19.15.3)
     parallel (1.27.0)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
@@ -188,7 +182,6 @@ DEPENDENCIES
   csv
   html-proofer (~> 4)
   jekyll
-  jekyll-gfm-admonitions
   jekyll-inline-svg
   jekyll-optional-front-matter
   jekyll-postcss-v2

_config.yml

@@ -85,9 +85,6 @@ plugins:
   - jekyll-postcss-v2
   # For icons
   - jekyll-inline-svg
-  # For alerts (warning/note/info) in markdown
-  - jekyll-gfm-admonitions
-
 
 toc:
     min_level: 2 # default: 1

projects/dockerfiles/index.md

@@ -110,9 +110,10 @@ jblogs@in-container:/host/build-x86$ ninja
 If you need to make any code modifications or commit things to git, use terminal
 A. If you need to recompile or simulate an image, use terminal B.
 
-> [!NOTE]
-> If QEMU fails when trying to simulate the image, try configuring your
-> Docker host to give the container more memory.
+{% include note.html %}
+If QEMU fails when trying to simulate the image, try configuring your
+Docker host to give the container more memory.
+{% include endnote.html %}
 
 ## Adding dependencies