config(reusable-update-flake-lock): Add flake-input as a parameter with empty default value

Author: galin-s

.github/workflows/reusable-update-flake-lock.yml

@@ -9,6 +9,11 @@ on:
         default: '["self-hosted"]'
         required: false
         type: string
+      flake-input:
+        description: 'Parameter for determining which flake will get updated'
+        default: ''
+        required: false
+        type: string
 
     secrets:
       NIX_GITHUB_TOKEN:
@@ -46,7 +51,7 @@ jobs:
           curl -fsSL --proto '=https' --tlsv1.2 \
             https://raw.githubusercontent.com/metacraft-labs/nixos-modules/main/scripts/commit_flake_update.bash \
             -o commit_flake_update.bash
-          bash commit_flake_update.bash
+          FLAKE_INPUT=${{ inputs.flake-input }} bash commit_flake_update.bash
 
       - uses: tibdex/[email protected]
         id: generate-token