Add memvid.com devcontainer feature

src/memvid.com/devcontainer-feature.json

@@ -0,0 +1,15 @@
+{
+    "name": "memvid.com",
+    "id": "memvid.com",
+    "version": "1.0.0",
+    "description": "Install \"memvid\" CLI",
+    "documentationURL": "https://github.com/devcontainer-community/devcontainer-features/tree/main/src/memvid.com",
+    "options": {
+        "version": {
+            "type": "string",
+            "default": "latest",
+            "proposals": ["latest"],
+            "description": "Version of \"memvid\" to install."
+        }
+    }
+}

src/memvid.com/install.sh

@@ -0,0 +1,49 @@
+#!/bin/bash
+set -o errexit
+set -o pipefail
+set -o noclobber
+set -o nounset
+set -o allexport
+readonly name='memvid'
+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"
+}
+utils_check_version() {
+    local version=$1
+    if ! [[ "${version:-}" =~ ^(latest|[0-9]+\.[0-9]+\.[0-9]+)$ ]]; then
+        printf >&2 '=== [ERROR] Option "version" (value: "%s") is not "latest" or valid semantic version format "X.Y.Z" !\n' \
+            "$version"
+        exit 1
+    fi
+}
+install() {
+    utils_check_version "$VERSION"
+    apt_get_checkinstall nodejs npm ca-certificates
+    if [ "$VERSION" = 'latest' ]; then
+        npm install -g memvid-cli
+    else
+        npm install -g "memvid-cli@${VERSION}"
+    fi
+    apt_get_cleanup
+}
+echo_banner "devcontainer.community"
+echo "Installing $name..."
+install "$@"
+echo "(*) Done!"

test/memvid.com/test.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+set -e
+
+source dev-container-features-test-lib
+
+check "execute command" bash -c "memvid --version | grep 'memvid'"
+
+reportResults