Update readme

README.md

@@ -38,3 +38,42 @@ To perform a full bootstrap from a clean Ubuntu or Pop!_OS install do:
 sudo apt-get update && sudo apt-get install -y curl git && \
   source <(curl -fsSL https://raw.githubusercontent.com/mapitman/linux-bootstrap/main/bootstrap)
 ```
+
+## Contributing
+
+### Local Validation
+
+Before submitting changes, run the local validation script to check for bash syntax errors and shellcheck issues:
+
+```sh
+bash scripts/check.sh
+```
+
+This script:
+- Finds all bash scripts (files with a bash shebang).
+- Runs `bash -n` to check for syntax errors.
+- Runs ShellCheck to report style and correctness issues.
+- Suggests installation steps if ShellCheck is not available.
+
+### ShellCheck Installation
+
+If ShellCheck is not installed, run one of the following depending on your distribution:
+
+```sh
+# Debian/Ubuntu/Pop!_OS
+sudo apt-get update && sudo apt-get install -y shellcheck
+
+# Fedora
+sudo dnf install -y ShellCheck
+
+# Arch
+sudo pacman -S shellcheck
+```
+
+### CI Checks
+
+When you open a pull request or push to the repository, GitHub Actions will automatically run:
+- **Syntax checks** (`bash -n`) on all shell scripts.
+- **ShellCheck** with error-level severity (warnings are advisory, errors block the merge).
+
+See [`.github/copilot-instructions.md`](.github/copilot-instructions.md) for detailed guidance on project patterns and conventions.

fedora/install-packages

@@ -45,6 +45,7 @@ sudo dnf install -y \
     genisoimage \
     gh \
     gimp \
+    git-extras \
     git-gui \
     gitk \
     gnome-shell-extension-caffeine \
@@ -90,6 +91,7 @@ sudo dnf install -y \
     rclone \
     rpmdevtools \
     rpmlint \
+    shellcheck \
     spice-gtk-tools \
     starship \
     tito \