Another attempt to get CI to build the gem

.github/workflows/test.yml

@@ -75,10 +75,11 @@ jobs:
         ruby-version: ${{ matrix.ruby }}
         bundler-cache: true
 
+    - name: Build gem
+      run: bundle exec gem build --verbose debug_inspector.gemspec
+
     - name: Install gem
-      run: |
-        bundle exec gem build debug_inspector.gemspec
-        gem install debug_inspector*.gem
+      run: gem install --verbose debug_inspector*.gem
 
     - name: Create directory for gem test
       run: mkdir -p tmp/gem-test
@@ -87,12 +88,25 @@ jobs:
       run: echo "gem 'debug_inspector'" > Gemfile
       working-directory: ./tmp/gem-test
 
-    - name: List gem contents
-      run: find $(bundle show debug_inspector)
+    - name: Get gem installation path
+      id: gem_path
+      run: |
+        gem_path=$(bundle show debug_inspector)
+        echo "gem_path is ${gem_path}"
+        echo "::set-output name=path::${gem_path}"
+      shell: bash
+      working-directory: ./tmp/gem-test
+
+    - name: List installed gem contents
+      run: find .
+      shell: bash
+      working-directory: ${{ steps.gem_path.outputs.path }}
 
     - name: Test gem load
       run: bundle exec ruby -e "require 'debug_inspector'"
+      working-directory: ./tmp/gem-test
 
     - name: Test gem functionality
       if: ${{ matrix.ruby != 'jruby' && matrix.ruby != 'truffleruby' }}
       run: bundle exec ruby -e "require 'debug_inspector'; RubyVM::DebugInspector.open { |dc| dc.frame_binding(1) }"
+      working-directory: ./tmp/gem-test