Ensure external links open in new tab

Ensure noopener and norel via a plugin. Am I going to actually write a
test and check for this? Lol.

Dockerfile

@@ -1,4 +1,8 @@
-FROM jekyll/builder:3.8 AS builder
+FROM docker.io/jekyll/builder:4 AS builder
+
+COPY --chown=1000 ./Gemfile* /src/
+WORKDIR /src/
+RUN bundle install
 
 COPY --chown=1000 . /src
 WORKDIR /src/ianonavy/

Gemfile

@@ -0,0 +1,3 @@
+source 'https://rubygems.org'
+
+gem 'jekyll-target-blank', '~> 2.0', '>= 2.0.2'

Gemfile.lock

@@ -0,0 +1,80 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.8.6)
+      public_suffix (>= 2.0.2, < 6.0)
+    colorator (1.1.0)
+    concurrent-ruby (1.2.3)
+    em-websocket (0.5.3)
+      eventmachine (>= 0.12.9)
+      http_parser.rb (~> 0)
+    eventmachine (1.2.7)
+    ffi (1.16.3)
+    forwardable-extended (2.6.0)
+    google-protobuf (3.23.4)
+    http_parser.rb (0.8.0)
+    i18n (1.14.4)
+      concurrent-ruby (~> 1.0)
+    jekyll (4.3.3)
+      addressable (~> 2.4)
+      colorator (~> 1.0)
+      em-websocket (~> 0.5)
+      i18n (~> 1.0)
+      jekyll-sass-converter (>= 2.0, < 4.0)
+      jekyll-watch (~> 2.0)
+      kramdown (~> 2.3, >= 2.3.1)
+      kramdown-parser-gfm (~> 1.0)
+      liquid (~> 4.0)
+      mercenary (>= 0.3.6, < 0.5)
+      pathutil (~> 0.9)
+      rouge (>= 3.0, < 5.0)
+      safe_yaml (~> 1.0)
+      terminal-table (>= 1.8, < 4.0)
+      webrick (~> 1.7)
+    jekyll-sass-converter (3.0.0)
+      sass-embedded (~> 1.54)
+    jekyll-target-blank (2.0.2)
+      jekyll (>= 3.0, < 5.0)
+      nokogiri (~> 1.10)
+    jekyll-watch (2.2.1)
+      listen (~> 3.0)
+    kramdown (2.4.0)
+      rexml
+    kramdown-parser-gfm (1.1.0)
+      kramdown (~> 2.0)
+    liquid (4.0.4)
+    listen (3.9.0)
+      rb-fsevent (~> 0.10, >= 0.10.3)
+      rb-inotify (~> 0.9, >= 0.9.10)
+    mercenary (0.4.0)
+    mini_portile2 (2.8.5)
+    nokogiri (1.13.10)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
+    pathutil (0.16.2)
+      forwardable-extended (~> 2.6)
+    public_suffix (5.0.4)
+    racc (1.7.3)
+    rake (13.2.0)
+    rb-fsevent (0.11.2)
+    rb-inotify (0.10.1)
+      ffi (~> 1.0)
+    rexml (3.2.6)
+    rouge (3.30.0)
+    safe_yaml (1.0.5)
+    sass-embedded (1.58.3)
+      google-protobuf (~> 3.21)
+      rake (>= 10.0.0)
+    terminal-table (3.0.2)
+      unicode-display_width (>= 1.1.1, < 3)
+    unicode-display_width (2.5.0)
+    webrick (1.8.1)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  jekyll-target-blank (~> 2.0, >= 2.0.2)
+
+BUNDLED WITH
+   1.17.2

ianonavy/_config.yml

@@ -25,3 +25,6 @@ github_username: ianonavy
 
 # Build settings
 markdown: kramdown
+
+plugins:
+- jekyll-target-blank