From 9f03fc84ecee471111b010f0bdcb9bdc7fbc283a Mon Sep 17 00:00:00 2001
From: Daniel Hansson <github@hanssonit.se>
Date: Sun, 9 Dec 2018 13:32:57 +0100
Subject: [PATCH] get the latest image tag

---
 static/docker_overlay2.sh | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/static/docker_overlay2.sh b/static/docker_overlay2.sh
index 828c3745..3f3e062f 100644
--- a/static/docker_overlay2.sh
+++ b/static/docker_overlay2.sh
@@ -20,6 +20,22 @@ debug_mode
 readonly DB_FILE="$DOCKERBACKUP/images.db"
 readonly IMG_DIR="$DOCKERBACKUP/images"
 
+# Update docker images
+# This updates ALL Docker images:
+if [ "$(docker ps -a >/dev/null 2>&1 && echo yes || echo no)" == "yes" ]
+then
+    docker images --format "{{.Repository}}:{{.Tag}}" | grep :latest | xargs -L1 docker pull
+fi
+
+if [ -f $SCRIPTS/dockerprune.sh ]
+then
+    bash $SCRIPTS/dockerprune.sh
+else
+    docker container prune -f
+    docker image prune -a -f
+    docker volume prune -f
+fi
+
 save_images() {
   echo "Create ${IMG_DIR}"
   if [[ ! -d "${IMG_DIR}" ]]; then