setup-spoke.sh: replace docker.io apt install with Docker official install script to fix docker-compose-plugin availability

spoke/setup-spoke.sh

@@ -135,22 +135,14 @@ $PKG_INSTALL vim "$AUTOSSH_PKG" "$OPENSSH_PKG" git
 
 info "Installing Docker..."
 if ! command -v docker >/dev/null 2>&1; then
-    if [ "$PKG_MANAGER" = "apt" ]; then
-        $PKG_INSTALL docker.io docker-compose-plugin
-    else
     curl -fsSL https://get.docker.com | bash
-    fi
 else
     warn "Docker already installed, skipping."
 fi
 
 if ! docker compose version >/dev/null 2>&1; then
-    if [ "$PKG_MANAGER" = "apt" ]; then
-        $PKG_INSTALL docker-compose-plugin
-    else
     warn "docker compose not available — Docker install script should have included it."
 fi
-fi
 
 info "Adding $SPOKE_USER to docker group..."
 usermod -aG docker "$SPOKE_USER" 2>/dev/null || true