docs: update document to build web and linux

README.md

@@ -6,7 +6,7 @@ A GUI app to create signatures on PDF pages interactively.
 
 checkout [`docs/FRs.md`](docs/FRs.md)
 
-## Build
+## run
 
 ```bash
 # flutter clean
@@ -22,8 +22,26 @@ flutter run
 
 # run unit tests and widget tests
 flutter test
+```
 
-flutter build
+### build
+
+For Windows
+```bash
+flutter build windows
 # create windows installer
 flutter pub run msix:create
 ```
+
+For web
+```bash
+flutter build web
+```
+Open the `index.html` file in the `build/web` directory. Remove the `<base href="/">` to ensure proper routing on GitHub Pages.
+
+For Linux
+```bash
+flutter build linux
+cp -r build/linux/x64/release/bundle/ AppDir
+appimagetool-x86_64.AppImage AppDir
+```

test/features/step/the_signature_on_page_is_shown_on_page.dart

@@ -11,8 +11,12 @@ Future<void> theSignatureOnPageIsShownOnPage(
 ) async {
   final container = TestWorld.container ?? ProviderContainer();
   TestWorld.container = container;
-  final srcList = container.read(pdfProvider.notifier).placementsOn(sourcePage.toInt());
-  final tgtList = container.read(pdfProvider.notifier).placementsOn(targetPage.toInt());
+  final srcList = container
+      .read(pdfProvider.notifier)
+      .placementsOn(sourcePage.toInt());
+  final tgtList = container
+      .read(pdfProvider.notifier)
+      .placementsOn(targetPage.toInt());
   // At least one exists on both
   expect(srcList, isNotEmpty);
   expect(tgtList, isNotEmpty);