new: self-update before launching all updates.

This prevent the need for a double launch of update script.

bin/pandachi-update

@@ -7,14 +7,15 @@ include common
 include pretty
 
 
-Wrap -d "Updating 0k-charms" <<EOF || exit 1
-cd /opt/apps/0k-charms
-git pull -r
-EOF
-
-charm --debug apply docker-host
-
-
+start=$SECONDS
+
+if [ -z "$NO_UPDATE" -a -d "/opt/apps/pandachi-manage" ]; then
+    Elt "Checking if pandachi-manage requires update..."
+    cd /opt/apps/pandachi-manage
+    REMOTE_HEAD="$(git ls-remote origin refs/heads/master 2>/dev/null | cut -f 1)"
+    HEAD="$(git rev-parse HEAD)"
+    if [ "$REMOTE_HEAD" != "$HEAD" ]; then
+        print_info "new version available"
         Wrap -d "Update pandachi-manage" <<EOF || exit 1
 if ! [ -d "/opt/apps/pandachi-manage" ]; then
     mkdir -p /opt/apps && cd /opt/apps
@@ -29,9 +30,27 @@ ln -sfn /opt/apps/pandachi-manage/bin/* /usr/local/sbin/
 find -L /usr/local/sbin -maxdepth 1 -type l -ilname /opt/apps/pandachi-manage/bin/\* -delete
 EOF
 
+        Feed || exit 1
+        export NO_UPDATE=1
+        exec pandachi-update
+        exit 0
+    else
+        print_info "up to date"
+        Feedback noop
+    fi
+fi
+
+
+Wrap -d "Updating 0k-charms" <<EOF || exit 1
+cd /opt/apps/0k-charms
+git pull -r
+EOF
+
+charm --debug apply docker-host
 
 ## there seem to be an error now within compose when trying to download let's encrypt image.
 Wrap -d "Updating some docker images" <<EOF || exit 1
 docker pull docker.0k.io/letsencrypt
 EOF
 
+printf "Update finished ${GREEN}successfully${NORMAL} ${GRAY}(in %.2fs)${NORMAL}.\n" "$((SECONDS - start))"