Add jonas-tig feature (#250)

* Initial plan

* feat: add jonas-tig feature (apt-based install)

Agent-Logs-Url: https://github.com/devcontainer-community/devcontainer-features/sessions/297cb33d-553c-4eec-9c77-d957e9a44889

Co-authored-by: sebst <592313+sebst@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: sebst <592313+sebst@users.noreply.github.com>

Author: Copilot

README.md

@@ -56,6 +56,7 @@
 | [jj-vcs.dev](https://github.com/devcontainer-community/devcontainer-features/tree/main/src/jj-vcs.dev) | `jj` — Git-compatible distributed VCS | gh release | 1.0.2 |
 | [jnsahaj/lumen](https://github.com/devcontainer-community/devcontainer-features/tree/main/src/jnsahaj-lumen) | `lumen` — AI-powered commit message generator | cargo | 1.0.0 |
 | [joelhooks/agent-secrets](https://github.com/devcontainer-community/devcontainer-features/tree/main/src/joelhooks-agent-secrets) | `secrets` — manage secrets for AI agents | gh release | 1.0.1 |
+| [jonas/tig](https://github.com/devcontainer-community/devcontainer-features/tree/main/src/jonas-tig) | `tig` — text-mode interface for Git | apt | 1.0.0 |
 | [jq](https://github.com/devcontainer-community/devcontainer-features/tree/main/src/jq) | `jq` — command-line JSON processor | apt | 1.0.0 |
 | [k9scli.io](https://github.com/devcontainer-community/devcontainer-features/tree/main/src/k9scli.io) | `k9s` — terminal UI for Kubernetes clusters | gh release | 1.0.1 |
 | [keybase.io](https://github.com/devcontainer-community/devcontainer-features/tree/main/src/keybase.io) | `keybase` — cryptographic identity and encrypted file sharing | curl | 1.2.0 |

src/jonas-tig/NOTES.md

@@ -0,0 +1,17 @@
+# jonas/tig
+
+## Project
+
+- [jonas/tig](https://jonas.github.io/tig/)
+
+## Description
+
+A text-mode interface for Git. `tig` allows you to browse and interact with Git repositories from the terminal, providing a curses-based UI for common Git operations.
+
+## Installation Method
+
+Installed via the system APT package manager (`apt-get install tig`).
+
+## Other Notes
+
+_No additional notes._

src/jonas-tig/devcontainer-feature.json

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

src/jonas-tig/install.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+set -o errexit
+set -o pipefail
+set -o noclobber
+set -o nounset
+set -o allexport
+readonly name="tig"
+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 tig
+    apt_get_cleanup
+}
+echo_banner "devcontainer.community"
+echo "Installing $name..."
+install "$@"
+echo "(*) Done!"

test/jonas-tig/test.sh

@@ -0,0 +1,18 @@
+#!/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 "tig --version | grep 'tig version'"
+
+# Report results
+# If any of the checks above exited with a non-zero exit code, the test will fail.
+reportResults