fix: add welcome message to .bashrc for persistent display

Configure setup script to append welcome message to .bashrc so it
displays automatically on every new terminal session in Codespaces.

This is more reliable than postStartCommand which doesn't always
show output in the terminal.

Author: gounthar

.devcontainer/setup.sh

@@ -83,3 +83,12 @@ cat "$WELCOME_FILE"
 
 echo "✅ Setup Complete! Welcome message saved to $WELCOME_FILE"
 echo ""
+
+# Add welcome message to .bashrc so it shows on every new terminal
+if ! grep -q "Jenkins Quickstart Tutorials Welcome" ~/.bashrc; then
+    echo "" >> ~/.bashrc
+    echo "# Jenkins Quickstart Tutorials Welcome" >> ~/.bashrc
+    echo "if [ -f /workspaces/quickstart-tutorials/.devcontainer/welcome.txt ]; then" >> ~/.bashrc
+    echo "    cat /workspaces/quickstart-tutorials/.devcontainer/welcome.txt" >> ~/.bashrc
+    echo "fi" >> ~/.bashrc
+fi