Add default copilot update to postStartCommand (#1624)

* Add postStartCommand to devcontainer feature

* Bump version of copilot-cli to 1.1.0

* feat: conditionally run copilot update based on use-latest flag file

Agent-Logs-Url: https://github.com/cmbrose/devcontainer-features/sessions/3627c9ec-26ad-486e-a1ae-a4159d1ec2c5

Co-authored-by: cmbrose <[email protected]>

* Bump version of copilot-cli to 1.1.1

* Update devcontainer-feature.json

* Modify flag file creation for CLI version checks

Updated the condition to create a flag file for both 'latest' and 'prerelease' versions.

* Update postStartCommand for Copilot CLI

* Fix conditional check for CLI version

* Bump version of copilot-cli to 1.1.2

---------

Co-authored-by: copilot-swe-agent[bot] <[email protected]>

Author: cmbrose

src/copilot-cli/devcontainer-feature.json

@@ -1,6 +1,6 @@
 {
     "id": "copilot-cli",
-    "version": "1.0.0",
+    "version": "1.1.2",
     "name": "GitHub Copilot CLI",
     "documentationURL": "https://github.com/devcontainers/features/tree/main/src/copilot-cli",
     "description": "Installs the GitHub Copilot CLI.",
@@ -15,6 +15,7 @@
             "description": "Select version of the GitHub Copilot CLI, if not latest."
         }
     },
+    "postStartCommand": "[ -f /etc/devcontainer-copilot-cli/auto-update ] && copilot update || true",
     "customizations": {
         "vscode": {
             "settings": {

src/copilot-cli/install.sh

@@ -80,3 +80,9 @@ echo "Downloading GitHub Copilot CLI..."
 
 install_using_github
 
+# Create a flag file if using "latest" or "prerelease" so the postStartCommand knows to auto-update
+if [ "${CLI_VERSION}" = "latest" ] || [ "${CLI_VERSION}" = "prerelease" ]; then
+    mkdir -p /etc/devcontainer-copilot-cli
+    touch /etc/devcontainer-copilot-cli/auto-update
+fi
+