From 30e7c2f6b0a1da5ee30c6ee958d10f42d4059840 Mon Sep 17 00:00:00 2001
From: Gmer4Lfe <gmer4lfe@gmail.com>
Date: Sun, 7 Jun 2026 09:57:00 -0400
Subject: [PATCH] Detect containers running behind already-pulled images
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OLD_ID vs NEW_ID only caught updates landed during this run. If an image
was pulled externally (Unraid UI), the container stayed on the old image
while :latest moved on — this run saw nothing to do. Now also compare
the container's current image ID against :latest and rebuild if behind.
---
 Docker_Essentials/docker_update.sh           | 17 ++++++++++++-----
 Docker_Essentials/docker_update_remaining.sh | 13 +++++++++----
 2 files changed, 21 insertions(+), 9 deletions(-)

diff --git a/Docker_Essentials/docker_update.sh b/Docker_Essentials/docker_update.sh
index 5a6514e..25cd296 100755
--- a/Docker_Essentials/docker_update.sh
+++ b/Docker_Essentials/docker_update.sh
@@ -285,7 +285,10 @@ for container in "${TARGET_CONTAINERS[@]}"; do
         continue
     fi
 
-    # Capture image ID before pull to detect whether an update landed
+    # Capture the image ID the container is currently running on, and the
+    # image ID :latest points to before the pull. After pulling, we rebuild if
+    # either a new digest landed OR the container is behind what :latest is now.
+    CONTAINER_IMAGE_ID=$(docker inspect "$container" --format='{{.Image}}' 2>/dev/null || echo "")
     OLD_ID=$(docker image inspect "$IMAGE" --format='{{.Id}}' 2>/dev/null || echo "")
 
     log "$ICON_SYNC  Pulling $IMAGE..."
@@ -299,12 +302,16 @@ for container in "${TARGET_CONTAINERS[@]}"; do
     NEW_ID=$(docker image inspect "$IMAGE" --format='{{.Id}}' 2>/dev/null || echo "")
 
     if [[ $_pull_rc -eq 0 ]]; then
-        if [[ -n "$OLD_ID" ]] && [[ "$OLD_ID" != "$NEW_ID" ]]; then
-            log "$ICON_DONE  $container — updated ✅ (${OLD_ID:7:12} → ${NEW_ID:7:12})"
+        _pull_new=$(  [[ -n "$OLD_ID" && "$OLD_ID" != "$NEW_ID" ]] && echo true || echo false)
+        _container_behind=$([[ -n "$CONTAINER_IMAGE_ID" && -n "$NEW_ID" && "$CONTAINER_IMAGE_ID" != "$NEW_ID" ]] && echo true || echo false)
+
+        if [[ "$_pull_new" == true || "$_container_behind" == true ]]; then
+            [[ "$_pull_new" == true ]]       && log "$ICON_DONE  $container — new image (${OLD_ID:7:12} → ${NEW_ID:7:12})"
+            [[ "$_container_behind" == true && "$_pull_new" == false ]] && log "$ICON_DONE  $container — image already pulled, container behind (${CONTAINER_IMAGE_ID:7:12} → ${NEW_ID:7:12})"
             UPDATED+=("$container")
-            OLD_IMAGE_IDS+=("$OLD_ID")
+            OLD_IMAGE_IDS+=("$CONTAINER_IMAGE_ID")
         else
-            log "$container — already up to date (${NEW_ID:7:12})"
+            log "$container — up to date (${NEW_ID:7:12})"
             UP_TO_DATE+=("$container")
         fi
     else
diff --git a/Docker_Essentials/docker_update_remaining.sh b/Docker_Essentials/docker_update_remaining.sh
index cdefc66..5117b77 100755
--- a/Docker_Essentials/docker_update_remaining.sh
+++ b/Docker_Essentials/docker_update_remaining.sh
@@ -187,6 +187,7 @@ for container in "${REMAINING[@]}"; do
         continue
     fi
 
+    CONTAINER_IMAGE_ID=$(docker inspect "$container" --format='{{.Image}}' 2>/dev/null || echo "")
     OLD_ID=$(docker image inspect "$IMAGE" --format='{{.Id}}' 2>/dev/null || echo "")
 
     log "$ICON_SYNC  Pulling $IMAGE..."
@@ -200,12 +201,16 @@ for container in "${REMAINING[@]}"; do
     NEW_ID=$(docker image inspect "$IMAGE" --format='{{.Id}}' 2>/dev/null || echo "")
 
     if [[ $_pull_rc -eq 0 ]]; then
-        if [[ -n "$OLD_ID" ]] && [[ "$OLD_ID" != "$NEW_ID" ]]; then
-            log "$ICON_DONE  $container — updated ✅ (${OLD_ID:7:12} → ${NEW_ID:7:12})"
+        _pull_new=$(  [[ -n "$OLD_ID" && "$OLD_ID" != "$NEW_ID" ]] && echo true || echo false)
+        _container_behind=$([[ -n "$CONTAINER_IMAGE_ID" && -n "$NEW_ID" && "$CONTAINER_IMAGE_ID" != "$NEW_ID" ]] && echo true || echo false)
+
+        if [[ "$_pull_new" == true || "$_container_behind" == true ]]; then
+            [[ "$_pull_new" == true ]]       && log "$ICON_DONE  $container — new image (${OLD_ID:7:12} → ${NEW_ID:7:12})"
+            [[ "$_container_behind" == true && "$_pull_new" == false ]] && log "$ICON_DONE  $container — image already pulled, container behind (${CONTAINER_IMAGE_ID:7:12} → ${NEW_ID:7:12})"
             UPDATED+=("$container")
-            OLD_IMAGE_IDS+=("$OLD_ID")
+            OLD_IMAGE_IDS+=("$CONTAINER_IMAGE_ID")
         else
-            log "$container — already up to date (${NEW_ID:7:12})"
+            log "$container — up to date (${NEW_ID:7:12})"
             UP_TO_DATE+=("$container")
         fi
     else