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

roles/matrix-dynamic-dns/defaults/main.yml

@@ -23,6 +23,7 @@ matrix_dynamic_dns_systemd_required_services_list: ['docker.service']
 
 # Build the container from source when running in mode
 matrix_dynamic_dns_container_image_self_build: false
+matrix_dynamic_dns_container_image_self_build_repo: "https://github.com/linuxserver/docker-ddclient.git"
 
 # Config paths
 matrix_dynamic_dns_base_path: "{{ matrix_base_data_path }}/dynamic-dns"

roles/matrix-dynamic-dns/tasks/install.yml

@@ -23,7 +23,7 @@
 
 - name: Ensure Dynamic DNS repository is present on self build
   git:
-    repo: https://github.com/linuxserver/docker-ddclient.git
+    repo: "{{ matrix_dynamic_dns_container_image_self_build_repo }}"
     dest: "{{ matrix_dynamic_dns_docker_src_files_path }}"
     force: "yes"
   register: matrix_dynamic_dns_git_pull_results