Simply use configued nanoc output directory

Rather than complicating things with the ability to specify an
output directory in this action, simply use the configured output
directory from the nanoc project. The output will be relative to
the specified source directory.

.github/workflows/test.yml

@@ -28,7 +28,6 @@ jobs:
         uses: ./
         with:
           source: ./test_projects/${{ matrix.test }}
-          destination: ./test_projects/${{ matrix.test }}/_site
 
       - name: Verify output
         run: |

action.yml

@@ -8,14 +8,6 @@ inputs:
     description: 'Directory where the source files reside.'
     required: false
     default: ./
-  destination:
-    description: 'Output directory of the build. Although it can be nested inside the source, it cannot be the same as the source directory.'
-    required: false
-    default: ./_site
-  project_nanoc_output_dir:
-    description: "The configured output directory of the Nanoc project. Defaults to 'output'"
-    required: false
-    default: output
   verbose:
     description: 'Verbose output'
     required: false

bin/compare_expected_output

@@ -6,16 +6,15 @@ require "shellwords"
 project_path = ARGV[0]
 
 Dir.chdir(project_path)
-puts Dir['**/*.*']
 
 expected_files = Dir["_expected/**/*"].select { |path| File.file?(path) }.map { |path| Pathname.new(path).relative_path_from("_expected").to_s }
-actual_files = Dir["_site/**/*"].select { |path| File.file?(path) }.map { |path| Pathname.new(path).relative_path_from("_site").to_s }
+actual_files = Dir["output/**/*"].select { |path| File.file?(path) }.map { |path| Pathname.new(path).relative_path_from("output").to_s }
 
 differences = []
 
 expected_files.each do |expected_file|
   if actual_files.include?(expected_file)
-    diff = `diff #{Shellwords.escape(File.join("_expected", expected_file))} #{Shellwords.escape(File.join("_site", expected_file))}`
+    diff = `diff #{Shellwords.escape(File.join("_expected", expected_file))} #{Shellwords.escape(File.join("output", expected_file))}`
     if !$?.success?
       differences << "Expected output of #{expected_file} differs:\n#{diff}"
     end

entrypoint.sh

@@ -9,8 +9,6 @@
 set -o errexit
 
 SOURCE_DIRECTORY=${GITHUB_WORKSPACE}/$INPUT_SOURCE
-DESTINATION_DIRECTORY=${GITHUB_WORKSPACE}/$INPUT_DESTINATION
-PROJECT_NANOC_OUTPUT_DIRECTORY=${SOURCE_DIRECTORY}/${INPUT_PROJECT_NANOC_OUTPUT_DIR}
 
 # Set verbose flag
 if [ "$INPUT_VERBOSE" = 'true' ]; then
@@ -22,5 +20,3 @@ fi
 cd "$SOURCE_DIRECTORY"
 bundle install
 bundle exec nanoc compile "$VERBOSE"
-
-mv "$PROJECT_NANOC_OUTPUT_DIRECTORY" "$DESTINATION_DIRECTORY"