From 5ad9acd98f26e1193a4b5afb38e055e9d40cd161 Mon Sep 17 00:00:00 2001
From: Yorick Downe <yorickdowne@gmail.com>
Date: Sat, 25 Apr 2026 08:46:37 +0100
Subject: [PATCH] Warn user if their Docker-CE is old

---
 ethd | 25 +++++++++++++++++++++++--
 1 file changed, 23 insertions(+), 2 deletions(-)

diff --git a/ethd b/ethd
index ab48f4b7..fe3bb4f6 100755
--- a/ethd
+++ b/ethd
@@ -5,10 +5,14 @@ set -Eeuo pipefail
 __project_name="Eth Docker"
 __app_name="Ethereum node"
 __sample_service="consensus"
-__min_env_version=56
+__min_env_version=55
+__target_pg=18
+__current_docker=29
 __docker_exe="docker"
 __old_docker=0
+__oldish_docker=0
 __docker_sudo=""
+__docker_version=""
 __docker_major_version=""
 __docker_minor_version=""
 __docker_patch_version=""
@@ -21,7 +25,6 @@ __compose_upgraded=0
 __distro=""
 __os_major_version=""
 __os_minor_version=""
-__target_pg=18
 __min_ubuntu=22
 __suggest_ubuntu="24.04 or 22.04."
 __upgrade_ubuntu="24.04: https://gist.github.com/yorickdowne/94f1e5538007f4c9d3da7b22b0dc28a4"
@@ -161,6 +164,12 @@ __handle_docker() {
     __old_docker=0
   fi
 
+# Warn user if their Docker-CE on Debian/Ubuntu is old. Maybe they're not updating.
+  if [[ "${__distro}" =~ (debian|ubuntu) && "${__docker_exe}" = "docker" && "${__docker_major_version}" -lt "${__current_docker}" ]] \
+        && dpkg-query -W -f='${Status}' docker-ce 2>/dev/null | grep -q "ok installed"; then
+    __oldish_docker=1
+  fi
+
   if ! docker images >/dev/null 2>&1; then
     if [[ "${__cannot_sudo}" -eq 1 ]]; then
       echo "Cannot call Docker and cannot use sudo. Please make your user part of the docker group"
@@ -6358,3 +6367,15 @@ if [[ "${__old_compose}" -eq 1 && "${__compose_major}" -eq 2 ]]; then
     echo "Please do so by running: \"sudo apt update && sudo apt dist-upgrade\""
   fi
 fi
+
+if [[ "${__oldish_docker}" -eq 1 ]]; then
+  echo "You are using Docker-CE version ${__docker_version}, which is not current."
+  current_docker_release=$(curl -m5 -s -H "User-Agent: eth-docker" "https://api.github.com/repos/moby/moby/releases/latest" 2>/dev/null | jq -r '.tag_name // empty' 2>/dev/null) || true
+  if [[ -n "${current_docker_release}" && "${current_docker_release}" =~ ^v[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
+    echo "The current Docker-CE release is ${current_docker_release}"
+  fi
+  echo "Try a \"sudo apt update && sudo apt dist-upgrade\". If that does not bring in an updated Docker-CE,"
+  echo "its repo file may have become disabled during an OS upgrade. Check \"/etc/apt/sources.list.d\" for"
+  echo "your Docker repo \".list\" or \".sources\", and if it's been disabled, recreate it or re-enable it."
+  echo "See https://docs.docker.com/engine/install/ for instructions."
+fi