Move self-building git repository URLs to variables (stop hardcoding)

roles/matrix-bridge-mautrix-hangouts/defaults/main.yml

@@ -4,6 +4,7 @@
 matrix_mautrix_hangouts_enabled: true
 
 matrix_mautrix_hangouts_container_image_self_build: false
+matrix_mautrix_hangouts_container_image_self_build_repo: "https://github.com/tulir/mautrix-hangouts.git"
 
 # See: https://mau.dev/tulir/mautrix-hangouts/container_registry
 matrix_mautrix_hangouts_docker_image: "{{ matrix_mautrix_hangouts_docker_image_name_prefix }}tulir/mautrix-hangouts:latest"

roles/matrix-bridge-mautrix-hangouts/tasks/setup_install.yml

@@ -32,7 +32,7 @@
 
 - name: Ensure Mautrix Hangots repository is present on self build
   git:
-    repo: https://github.com/tulir/mautrix-hangouts.git
+    repo: "{{ matrix_mautrix_hangouts_container_image_self_build_repo }}"
     dest: "{{ matrix_mautrix_hangouts_docker_src_files_path }}"
     force: "yes"
   register: matrix_mautrix_hangouts_git_pull_results