Initial DevTool feature (#40)

Author: markphip

README.md

@@ -7,6 +7,7 @@ to assist teams in adopting Codespaces. Here is a list of the features in this r
 | Feature | Description |
 | ------- | ----------- |
 | [artifacts-helper](src/artifacts-helper)   | Install Azure Artifacts credential helper configured for Codespace authentication |
+| [devtool](src/devtool) | Installs DevTool (Microsoft-internal only) |
 | [docfx](src/docfx)   | Install docfx to support editing and testing documentation |
 | [external-repository](src/external-repository)   | Handles all the details of working with an external git repository in Codespaces |
 | [microsoft-git](src/microsoft-git) | Install microsoft/git with Scalar and GVFS support |

src/devtool/NOTES.md

@@ -0,0 +1,7 @@
+This installs a Microsoft-internal tool named DevTool. This will also install
+the `xdg-utils` package so that the `xdg-open` CLI is available for the
+DevTool CLI to be able to use to open a web browser.
+
+## OS Support
+
+This feature is tested to work on Debian/Ubuntu

src/devtool/devcontainer-feature.json

@@ -0,0 +1,17 @@
+{
+    "name": "DevTool",
+    "id": "devtool",
+    "version": "1.0.0",
+    "description": "Install DevTool",
+    "installsAfter": [
+        "ghcr.io/devcontainers/features/common-utils"
+    ],
+    "customizations": {
+        "vscode": {
+            "extensions": [
+                "ms-codespaces-tools.ado-codespaces-auth"
+            ]
+        }
+    },
+    "postCreateCommand": "curl –sL https://aka.ms/InstallToolLinux.sh | sh -s DevTool​"    
+}

src/devtool/install.sh

@@ -0,0 +1,40 @@
+#!/bin/sh
+
+set -e
+
+
+# Source /etc/os-release to get OS info
+. /etc/os-release
+
+if [ "$(id -u)" -ne 0 ]; then
+    echo -e 'Script must be run as root. Use sudo, su, or add "USER root" to your Dockerfile before running this script.'
+    exit 1
+fi
+
+apt_get_update()
+{
+    if [ "$(find /var/lib/apt/lists/* | wc -l)" = "0" ]; then
+        echo "Running apt-get update..."
+        apt-get update -y
+    fi
+}
+
+# Checks if packages are installed and installs them if not
+check_packages() {
+    if ! dpkg -s "$@" > /dev/null 2>&1; then
+        apt_get_update
+        apt-get -y install --no-install-recommends "$@"
+        rm -rf /var/lib/apt/lists/*
+    fi
+}
+
+export DEBIAN_FRONTEND=noninteractive
+
+if [ "${ID}" = "mariner" ]; then
+    tdnf install -y curl ca-certificates
+    tdnf clean all
+else
+    check_packages curl ca-certificates xdg-utils
+fi
+
+exit 0