backstage update tutorial, part 2

docs/technical-documentation/product/components/Backstage/backstage-update-tutorial/_index.md

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+---
+title: Backstage Update Tutorial
+---
+
+The first Backstage update was performed as described in the ticket https://jira.telekom-mms.com/browse/IPCEICIS-2299 from version 1.28 to version 1.36.1.
+
+This document provides a detailed guide on the process to update Backstage locally on your machine from version 1.36.1 to 1.38.1.
+Later updates can be performed accordingly. (The fixing of deprecated imports should not be necessary, again.)
+
+## Table of Contents
+
+1. [Prerequisites](#prerequisites)
+2. [Setting Up Backstage](#setting-up-backstage)
+3. [Updating Backstage](#updating-backstage)
+4. [Fix deprecated import](#fix-deprecated-import)
+5. [Running Backstage](#running-backstage)
+
+## Prerequisites <a name="prerequisites"></a>
+
+Before you start, make sure you have the following installed on your machine:
+
+1. **Node.js**: Backstage requires Node.js. You can download it from the [Node.js website](https://nodejs.org/).
+2. **Yarn**: Backstage uses Yarn as its package manager.
+3. **Git**
+4. **Docker**
+
+## Setting Up Backstage <a name="setting-up-backstage"></a>
+
+To download the latest version of our Backstage-EDP app, use git to clone it from the OSC repository at https://forgejo.edf-bootstrap.cx.fg1.ffm.osc.live/DevFW-CICD/backstage-edp.git.
+
+Make sure yarn ist installed locally. If it hasn't been installed yet, run in the project path:
+   ```bash
+   yarn install
+   ```
+
+## Updating Backstage <a name="updating-backstage"></a>
+
+In the project path run:
+   ```bash
+   yarn backstage-cli versions:bump
+   ```
+
+This will update all relevant components to the newest versions.
+
+## Fix deprecated import <a name="fix-deprecated-import"></a>
+
+In a text editor of your choice open the file <I>'/backstage-edp/packages/backend/src/plugins/proxy.ts'</I> and implement the two following changes.
+
+### Update import
+
+First (due to changes in the library) replace the deprecated import
+
+   ```typescript
+   import { createRouter } from '@backstage/plugin-proxy-backend';
+   ```
+
+with the following import:
+
+   ```typescript
+   import { createRouter } from '@roadiehq/backstage-plugin-argo-cd-backend';
+   ```
+
+### Update method call createRouter()
+
+Secondly (due to a changed signature) replace the <B>old</B> call of method createRouter() 
+
+   ```typescript
+  return await createRouter({
+    logger: env.logger,
+    config: env.config,
+    discovery: env.discovery
+  });
+   ```
+
+with the following <B>new</B> method call:
+
+   ```typescript
+  return await createRouter({
+    logger: env.logger,
+    config: env.config
+  });
+   ```
+
+## Running backstage <a name="running-backstage"></a>
+
+After completing all updates and fixes, run backstage to verify everything was updated correctly.
+
+In the project path run:
+   ```bash
+   docker build --no-cache -t backstage-cnoe .
+   ```
+
+Start the backend from a console:
+   ```bash
+   yarn run start-backend
+   ```
+
+Start the frontend from a console:
+   ```bash
+   yarn run start
+   ```
+
+The backstage frontend should now open in your browser.