feat(tailscale.com): Add feature. (#19)

Author: sebst

.github/workflows/test.yaml

@@ -21,6 +21,7 @@ jobs:
           - pkgx.sh
           - smallstep.com
           - starship.rs
+          - tailscale.com
           - webinstall.dev
           - zellij.dev
         baseImage:
@@ -50,6 +51,7 @@ jobs:
           - pkgx.sh
           - smallstep.com
           - starship.rs
+          - tailscale.com
           - webinstall.dev
           - zellij.dev
     steps:

src/tailscale.com/devcontainer-feature.json

@@ -0,0 +1,17 @@
+{
+    "name": "tailscale.com",
+    "id": "tailscale.com",
+    "version": "1.0.0",
+    "description": "Install \"tailscale\" binary",
+    "documentationURL": "https://github.com/devcontainer-community/devcontainer-features/tree/main/src/tailscale.com",
+    "options": {
+        "version": {
+            "type": "string",
+            "default": "latest",
+            "proposals": [
+                "latest"
+            ],
+            "description": "Currently unused."
+        }
+    }
+}

src/tailscale.com/install.sh

@@ -0,0 +1,36 @@
+#!/bin/bash
+set -o errexit
+set -o pipefail
+set -o noclobber
+set -o nounset
+set -o allexport
+readonly name="tailscale"
+apt_get_update() {
+    if [ "$(find /var/lib/apt/lists/* | wc -l)" = "0" ]; then
+        echo "Running apt-get update..."
+        apt-get update -y
+    fi
+}
+apt_get_checkinstall() {
+    if ! dpkg -s "$@" >/dev/null 2>&1; then
+        apt_get_update
+        DEBIAN_FRONTEND=noninteractive apt-get -y install --no-install-recommends --no-install-suggests --option 'Debug::pkgProblemResolver=true' --option 'Debug::pkgAcquire::Worker=1' "$@"
+    fi
+}
+apt_get_cleanup() {
+    apt-get clean
+    rm -rf /var/lib/apt/lists/*
+}
+echo_banner() {
+    local text="$1"
+    echo -e "\e[1m\e[97m\e[41m$text\e[0m"
+}
+install() {
+    apt_get_checkinstall unzip curl ca-certificates
+    curl -fsSL https://tailscale.com/install.sh | sh
+    apt_get_cleanup
+}
+echo_banner "devcontainer.community"
+echo "Installing $name..."
+install "$@"
+echo "(*) Done!"

test/tailscale.com/test.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+
+set -e
+
+# Optional: Import test library bundled with the devcontainer CLI
+# See https://github.com/devcontainers/cli/blob/HEAD/docs/features/test.md#dev-container-features-test-lib
+# Provides the 'check' and 'reportResults' commands.
+source dev-container-features-test-lib
+
+# Feature-specific tests
+# The 'check' command comes from the dev-container-features-test-lib. Syntax is...
+# check <LABEL> <cmd> [args...]
+
+check "execute command" bash -c "tailscale --version"
+
+# Report results
+# If any of the checks above exited with a non-zero exit code, the test will fail.
+reportResults