Remove doc test (too many gotchas)

Author: esotericpig

.github/workflows/ci.yml

@@ -13,10 +13,11 @@ permissions:
 jobs:
   test:
     strategy:
+      fail-fast: false
       matrix:
         os: [ 'ubuntu-latest','macos-latest' ]
         # - https://www.ruby-lang.org/en/downloads/branches
-        ruby: [ '3.1','ruby-head' ]
+        ruby: [ '3.1','ruby-head','jruby-head' ]
 
     runs-on: "${{ matrix.os }}"
 
@@ -31,6 +32,7 @@ jobs:
       uses: ruby/setup-ruby@v1
       with:
         ruby-version: "${{ matrix.ruby }}"
+        bundler: 'latest'
         bundler-cache: false
         cache-version: 2
 
@@ -42,11 +44,8 @@ jobs:
     - name: Run tests
       run: bundle exec rake test
 
-    - name: Test doc
-      run: bundle exec rake doc
-
     - name: Test build & install
       run: |
         bundle exec rake build
         gem install --document --local pkg/*.gem
-        ruby -w -rinit_copy -e 'puts InitCopy::VERSION'
+        ruby -w -r init_copy -e 'puts InitCopy::VERSION'