Linux: Add script to install debian repository automatically

linux/setup_repo.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+
+# This script installs a Jamulus repository to Debian based systems
+
+if [[ ${EUID} -ne 0 ]]; then
+     echo "Error: This script must be run as root."
+     exit 1
+fi
+
+REPO_FILE=/etc/apt/sources.list.d/jamulus.list
+KEY_FILE=/etc/apt/trusted.gpg.d/jamulus.asc
+GITHUB_REPOSITORY="jamulussoftware/jamulus"
+
+echo "Setting up Jamulus repo at ${REPO_FILE}..."
+echo "deb https://github.com/${GITHUB_REPOSITORY}/releases/latest/download/ ./" > ${REPO_FILE}
+echo "Installing Jamulus GPG key at ${KEY_FILE}..."
+curl --fail --show-error -sLo "${KEY_FILE}" https://github.com/${GITHUB_REPOSITORY}/releases/latest/download/key.asc
+
+CURL_EXITCODE=$?
+if [[ ${CURL_EXITCODE} -ne 0 ]]; then
+      echo "Error: Download of gpg key failed. Please try again later."
+      exit ${CURL_EXITCODE}
+fi
+
+echo "Running apt update..."
+apt -qq update
+echo "You should now be able to install a full Jamulus package via"
+echo "  apt install jamulus"
+echo "or a server-only, dependency-reduced build via"
+echo "  apt install jamulus-headless"
+echo
+echo "This package will automatically be updated when you perform system updates."