chore: use packaged create-app script

.github/workflows/ci.yaml

@@ -35,7 +35,7 @@ jobs:
         run: make lint
 
       - name: Stub GitHub App credentials (required for validation)
-        run: cd ./examples/with-backstage && STUB_FILE=1 node create-gh-app/index.js
+        run: cd ./examples/with-backstage && docker run --rm -e STUB_FILE=1 -v $(pwd):/pwd ghcr.io/humanitec-architecture/create-gh-app
 
       - name: Terraform Validate
         run: make validate

examples/with-backstage/README.md

@@ -5,24 +5,30 @@ Provisions the AWS reference architecture connected to Humanitec and installs Ba
 ## Prerequisites
 
 * The same prerequisites as the [base reference architecture](../../README.md#prerequisites), plus the following items.
-* A GitHub organization and permission to create new repositories in it. Go to https://github.com/account/organizations/new to create a new org (the "Free" option is fine). Note: is has to be an organization, a free account is not sufficient.
+* A GitHub organization and permission to create new repositories in it. Go to <https://github.com/account/organizations/new> to create a new org (the "Free" option is fine). Note: is has to be an organization, a free account is not sufficient.
 * Create a classic github personal access token with `repo`, `workflow`, `delete_repo` and `admin:org` scope [here](https://github.com/settings/tokens).
 * Set the `GITHUB_TOKEN` environment variable to your token.
-  ```
+
+  ```bash
   export GITHUB_TOKEN="my-github-token"
   ```
+
 * Set the `GITHUB_ORG_ID` environment variable to your GitHub organization ID.
-  ```
+
+  ```bash
   export GITHUB_ORG_ID="my-github-org-id"
   ```
+
 * [Node.js](https://nodejs.org) installed locally.
-* Install the GitHub App for Backstage into your GitHub organization using `node create-gh-app/index.js`. Follow the instructions.
-  * “All repositories” ~> Install
-  * “Okay, […] was installed on the […] account.” ~> You can close the window and server.
+* Install the GitHub App for Backstage into your GitHub organization
+  * Run `docker run --rm -it -e GITHUB_ORG_ID -v $(pwd):/pwd -p 127.0.0.1:3000:3000 ghcr.io/humanitec-architecture/create-gh-app` ([image source](https://github.com/humanitec-architecture/create-gh-app/)) and follow the instructions:
+    * “All repositories” ~> Install
+    * “Okay, […] was installed on the […] account.” ~> You can close the window and server.
 
 ## Usage
 
 Follow the same steps as for the [base layer](../../README.md#usage), applying these modifications:
+
 * Execute `cd ./examples/with-backstage` after cloning the repo. Execute all subsequent commands in this directory.
 * In particular, use the `./examples/with-backstage/terraform.tfvars.example` file as the basis for your `terraform.tfvars` file. It defines additional variables needed to setup and configure Backstage.
 
@@ -32,31 +38,38 @@ Check for the existence of key elements of the backstage module. This is a subse
 
 1. Perform the [verification steps of the base installation](../../README.md) if you have not already done so.
 2. Verify the existence of the Backstage Application in your Humanitec Organization:
+
    ```
    curl -s https://api.humanitec.io/orgs/${HUMANITEC_ORG}/apps/backstage \
      --header "Authorization: Bearer ${HUMANITEC_TOKEN}"
    ```
+
    This should output a JSON formatted representation of the Application like so:
+
    ```
    {"id":"backstage","name":"backstage","created_at":"2023-10-02T13:44:27Z","created_by":"s-d3e94a0e-8b53-29f9-b666-27548b7e06e0","envs":[{"id":"development","name":"Development","type":"development"}]}
    ```
+
    You can also check for the Application in the [Humanitec Platform Orchestrator UI](https://app.humanitec.io).
 
 3. Connect to your EKS cluster via `kubectl`. See the [AWS documentation](https://docs.aws.amazon.com/eks/latest/userguide/create-kubeconfig.html) or use this command:
+
    ```
    aws eks update-kubeconfig --region <my-aws-region> --name ref-arch
    ```
+
 4. Get the elements in the newly created Kubernetes namespace:
+
    ```
    kubectl get all -n backstage-development
    ```
+
    You should see
-   - a `deployment`, `replicaset`, running `pod`, and `service` for Backstage
-   - a `statefulset`, running `pod`, and `service` for PostgreSQL database used by Backstage.
+   * a `deployment`, `replicaset`, running `pod`, and `service` for Backstage
+   * a `statefulset`, running `pod`, and `service` for PostgreSQL database used by Backstage.
 
    Note: it may take up to ten minutes after the `terraform apply` completed until you actually see those resources. The Backstage application needs to built and deployed via a GitHub action out of the newly created repository in your GitHub organization.
 
-
 ## Cleaning up
 
 Once you are finished with the reference architecture, you can remove all provisioned infrastrcuture and the resource definitions created in Humanitec with the following: