update hookshot private key file mechanism

roles/matrix-bridge-hookshot/defaults/main.yml

@@ -35,7 +35,8 @@ matrix_hookshot_webhook_endpoint: "{{ matrix_hookshot_public_endpoint }}/webhook
 # https://half-shot.github.io/matrix-hookshot/setup/github.html
 matrix_hookshot_github_enabled: false
 matrix_hookshot_github_appid: ''
-matrix_hookshot_github_private_key: ''
+# manually copy the generated and downloaded GitHub private key to /roles/matrix-bridge-hookshot/files/github-key.pem
+matrix_hookshot_github_private_key: 'github-key.pem'
 matrix_hookshot_github_secret: '' # "Webhook secret" on the GitHub App page
 matrix_hookshot_github_oauth_enabled: false
 # you need to configure oauth settings only when you have enabled oauth (optional)

roles/matrix-bridge-hookshot/tasks/setup_install.yml

@@ -47,6 +47,14 @@
     owner: "{{ matrix_user_username }}"
     group: "{{ matrix_user_groupname }}"
 
+- name: Ensure hookshot github private key file installed if github is enabled
+  copy:
+    src: github-key.pem
+    dest: "{{ matrix_hookshot_base_path }}/{{ matrix_hookshot_github_private_key }}"
+    mode: 0600
+    owner: "{{ matrix_user_username }}"
+    group: "{{ matrix_user_groupname }}"
+
 - name: Ensure matrix-hookshot.service installed
   template:
     src: "{{ role_path }}/templates/systemd/matrix-hookshot.service.j2"

roles/matrix-bridge-hookshot/templates/config.yml.j2

@@ -15,7 +15,7 @@ github:
     # Authentication for the GitHub App.
     #
     id: {{ matrix_hookshot_github_appid }}
-    privateKeyFile: {{ matrix_hookshot_github_private_key }}
+    privateKeyFile: /data/{{ matrix_hookshot_github_private_key }}
   webhook:
     # Webhook settings for the GitHub app.
     #