diff --git a/nextcloud/actions/get-version b/nextcloud/actions/get-version
new file mode 100755
index 0000000..32a3f00
--- /dev/null
+++ b/nextcloud/actions/get-version
@@ -0,0 +1,24 @@
+#!/bin/bash
+# compose: no-hooks
+
+. $CHARM_PATH/lib/common
+
+
+
+
+image_version=${DOCKER_BASE_IMAGE##*:}  ## retrieve tag
+image_version=${image_version%%-*}  ## remove suffix
+
+version=$(nextcloud:config:version) || {
+    err "Failed to retrieve version"
+    exit 1
+}
+
+version=${version:-N/A}  ## remove suffix
+
+msg=()
+if [ "$version" != "$image_version" ]; then
+    msg+=("image version mismatch ($image_version)")
+fi
+
+printf "%s\n" "$version" "${msg[@]}"
diff --git a/nextcloud/actions/upgrade b/nextcloud/actions/upgrade
index 86c0241..369b60c 100755
--- a/nextcloud/actions/upgrade
+++ b/nextcloud/actions/upgrade
@@ -55,17 +55,7 @@ while [ "$1" ]; do
     shift
 done
 
-nextcloud:config:version() {
-    for f in {"$SERVICE_CONFIGSTORE","$SERVICE_DATASTORE"}/var/www/html/config/config.php; do
-        if [ -e "$f" ]; then
-            cat "$f"
-            break
-        fi
-    done |
-        grep "'version' =>" |
-        cut -f 4 -d \' |
-        cut -f 1-3 -d .
-}
+. lib/common
 
 nextcloud:code:version() {
     cat "$SERVICE_DATASTORE/var/www/html/version.php" |
diff --git a/nextcloud/lib/common b/nextcloud/lib/common
index 34b494b..abd19bd 100644
--- a/nextcloud/lib/common
+++ b/nextcloud/lib/common
@@ -188,4 +188,17 @@ nextcloud:config:simple:add() {
     fi
     ## Add '$key' => 'value', to the end of the file, before the closing paren.
     sed -ri "s/^(\);)$/  '$key' => '${value}',\n\1/g" "$CONFIGFILE"
-}
\ No newline at end of file
+}
+
+
+nextcloud:config:version() {
+    for f in {"$SERVICE_CONFIGSTORE","$SERVICE_DATASTORE"}/var/www/html/config/config.php; do
+        if [ -e "$f" ]; then
+            cat "$f"
+            break
+        fi
+    done |
+        grep "'version' =>" |
+        cut -f 4 -d \' |
+        cut -f 1-3 -d .
+}