plugins/auth-backend: docs for saml-idp

plugins/auth-backend/README.md

@@ -19,6 +19,14 @@ read -r AUTH_GOOGLE_CLIENT_SECRET
 export AUTH_GOOGLE_CLIENT_SECRET
 run `yarn start` in packages/backend folder
 
+### SAML
+
+To try out SAML, you can use the mock identity provider:
+
+```bash
+./scripts/start-saml-idp.sh
+```
+
 ## Links
 
 - (The Backstage homepage)[https://backstage.io]

plugins/auth-backend/scripts/start-saml-idp.sh

@@ -1,5 +1,9 @@
 #!/bin/bash
 
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
+
+cd "$DIR"
+
 if [[ ! -f idp-public-cert.pem ]]; then
   echo "Generating new SAML Certificates"
   openssl req \