From 2469b94b1f03c495e5cd4f1f86e553928b077d45 Mon Sep 17 00:00:00 2001
From: jtricerolph <info@tricerolph.com>
Date: Wed, 1 Jul 2026 13:34:15 +0000
Subject: [PATCH] install_docker: idempotent (skip if present), non-interactive
 gpg

---
 install-stack.sh | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/install-stack.sh b/install-stack.sh
index 2f90403..6c659c5 100755
--- a/install-stack.sh
+++ b/install-stack.sh
@@ -389,11 +389,17 @@ install_docker() {
   local id=$1
   pct exec "$id" -- bash -s &>/dev/null <<'DOCKER_INSTALL'
 export DEBIAN_FRONTEND=noninteractive
+# Idempotent: if Docker's already here, just make sure it's running and bail.
+if command -v docker >/dev/null 2>&1; then
+  systemctl enable --now docker ssh 2>/dev/null
+  exit 0
+fi
 apt-get update -qq 2>/dev/null
 apt-get install -y -qq ca-certificates curl gnupg git openssh-server 2>/dev/null
 install -m 0755 -d /etc/apt/keyrings
+rm -f /etc/apt/keyrings/docker.gpg
 curl -fsSL https://download.docker.com/linux/ubuntu/gpg \
-  | gpg --dearmor -o /etc/apt/keyrings/docker.gpg 2>/dev/null
+  | gpg --batch --yes --dearmor -o /etc/apt/keyrings/docker.gpg 2>/dev/null
 echo "deb [arch=amd64 signed-by=/etc/apt/keyrings/docker.gpg] \
 https://download.docker.com/linux/ubuntu jammy stable" \
   > /etc/apt/sources.list.d/docker.list