Add shorter terminal prompt (PS1) for Codespaces

.devcontainer/README.md

@@ -0,0 +1,21 @@
+# Dev Container Configuration
+
+This directory contains the configuration for GitHub Codespaces and VS Code Dev Containers.
+
+## Shorter Terminal Prompt
+
+The `postStartCommand` in `devcontainer.json` configures a shorter bash prompt (`\W\$ `) that shows only the current directory name instead of the full path. This makes the terminal easier to read, especially in workshop settings.
+
+The command is idempotent—it only adds the `PS1` export line to `~/.bashrc` if it's not already present, so restarting the Codespace won't create duplicate lines.
+
+### How to Override
+
+If you prefer a different prompt, you can:
+
+1. **Edit `~/.bashrc` directly**: Modify or remove the `export PS1='\W\$ '` line and add your preferred prompt setting.
+
+2. **Use a custom dotfiles repo**: Configure your [GitHub Codespaces dotfiles](https://docs.github.com/en/codespaces/customizing-your-codespace/personalizing-github-codespaces-for-your-account#dotfiles) to set your preferred `PS1` value. Your dotfiles will take precedence.
+
+### How to Revert
+
+To remove this feature from the repository, delete the `postStartCommand` line from `devcontainer.json`.

.devcontainer/devcontainer.json

@@ -26,7 +26,9 @@
 	},
 	"extensions": [
 		"ms-vscode.live-server",
-	]
+	],
+	// Use 'postStartCommand' to configure a shorter terminal prompt for Codespaces.
+	"postStartCommand": "grep -qxF \"export PS1='\\\\W\\\\$ '\" ~/.bashrc || echo \"export PS1='\\\\W\\\\$ '\" >> ~/.bashrc"
 	// Features to add to the dev container. More info: https://containers.dev/features.
 	// "features": {},
 	// Use 'forwardPorts' to make a list of ports inside the container available locally.