Fix matrix_rageshake_container_src_files_path value

roles/custom/matrix-rageshake/defaults/main.yml

@@ -18,7 +18,7 @@ matrix_rageshake_data_path: "{{ matrix_rageshake_base_path }}/data"
 matrix_rageshake_container_image_self_build: false
 matrix_rageshake_container_repo: "https://github.com/matrix-org/rageshake/"
 matrix_rageshake_container_repo_version: "{{ 'master' if matrix_rageshake_version == 'master' else matrix_rageshake_version }}"
-matrix_rageshake_container_src_files_path: "{{ matrix_base_data_path }}/Dockerfile"
+matrix_rageshake_container_src_files_path: "{{ matrix_rageshake_base_path }}/container-src"
 
 # A list of extra arguments to pass to the container
 matrix_rageshake_container_extra_arguments: []