[dd-ctl] Adapt update subcommand with all actions

This way existing installations can just run ./dd-ctl update and have a
working environment with the latest version.

dd-ctl

@@ -49,7 +49,6 @@ help() {
 	 Example: ./dd.ctl [operation] [arguments]
 
 	  For a new installation, you usually will want to run:
-	    ./dd-ctl repo-update
 	    ./dd-ctl prerequisites
 	    ./dd-ctl securize
 	    ./dd-ctl all
@@ -67,7 +66,7 @@ help() {
 Generate .orig and .patch files to compare with upstream: ./dd-ctl genpatches
 	                   Rescan nextcloud data folders: ./dd-ctl nextcloud-scan
 	      Install all prerequisites for installation: ./dd-ctl prerequisites
-	                               Update repository: ./dd-ctl repo-update [branch-name] (defaults to main)
+	                     Update DD to latest version: ./dd-ctl update [branch-name] (defaults to main)
 	    Restart api if changes applied (development): ./dd-ctl restart-api
 	                        Update SAML certificates: ./dd-ctl saml
 	                 Set secure passwords in dd.conf: ./dd-ctl securize
@@ -154,25 +153,20 @@ prerequisites_pwd(){
 	apt-get install -y dictionaries-common wamerican
 }
 
-update_repo(){
+ddupdate(){
+	# Bring down services
+	./dd-ctl down
 	# Switch to latest version
 	git fetch && git checkout $REPO_BRANCH
+	git pull --rebase --autostash
 	# Needed for dd-apps submodules...
 	git submodule update --init --recursive
-	# Remove old repositories
-	for old_dir in isard-apps isard-sso; do
-		if [ -d "${old_dir}" ]; then
-			mkdir -p _old
-			mv "${old_dir}" "_old/${old_dir}_$(date +'%Y-%m-%d_%H-%M')"
-		fi
-	done
-	# Cleanup
-	for old_dir in isard-apps isard-sso; do
-		git submodule deinit "${old_dir}" || true
-		if [ -d "${old_dir}" ]; then
-			rmdir "${old_dir}"
-		fi
-	done
+	# Rebuild containers
+	./dd-ctl build
+	# Upgrade plugins
+	./dd-ctl upgrade-plugins
+	# Reapply customisations if needed
+	./dd-ctl customize
 }
 
 build_compose(){
@@ -788,8 +782,8 @@ case "$OPERATION" in
 		prerequisites_docker
 		prerequisites_pwd
 	;;
-	repo-update)
-		update_repo
+	update|repo-update)
+		ddupdate
 	;;
 	reset-data|reset-1714)
 		cat <<-EOF