Remove redundant apt update and install; add deb-get setup

The apt update and ca-certificates/curl install commands were removed as they were unnecessary for the script's context. Additionally, support for installing deb-get was added to streamline package management.

03-install.sh

@@ -36,8 +36,6 @@ flatpak remote-add --if-not-exists flathub https://dl.flathub.org/repo/flathub.f
 
 # Install Docker
 # Add Docker's official GPG key:
-sudo apt update
-sudo apt install ca-certificates curl
 sudo install -m 0755 -d /etc/apt/keyrings
 sudo curl -fsSL https://download.docker.com/linux/debian/gpg -o /etc/apt/keyrings/docker.asc
 sudo chmod a+r /etc/apt/keyrings/docker.asc
@@ -97,3 +95,6 @@ curl -fsSL https://ollama.com/install.sh | sh
 
 # OpenDeck
 curl -sSL https://raw.githubusercontent.com/nekename/OpenDeck/main/install_opendeck.sh | bash
+
+# deb-get
+curl -sL https://raw.githubusercontent.com/wimpysworld/deb-get/main/deb-get | sudo -E bash -s install deb-get