Make synapse-compress-state in-container binary path configurable

This makes it easier to use another container image for
rust-synapse-compress-state, which may be storing the binary at another
path.

roles/matrix-synapse/defaults/main.yml

@@ -624,6 +624,7 @@ matrix_synapse_rust_synapse_compress_state_docker_image: "devture/rust-synapse-c
 matrix_synapse_rust_synapse_compress_state_docker_image_force_pull: "{{ matrix_synapse_rust_synapse_compress_state_docker_image.endswith(':latest') }}"
 
 matrix_synapse_rust_synapse_compress_state_base_path: "{{ matrix_base_data_path }}/rust-synapse-compress-state"
+matrix_synapse_rust_synapse_compress_state_synapse_compress_state_in_container_path: "/synapse-compress-state"
 
 
 # Default Synapse configuration template which covers the generic use case.

roles/matrix-synapse/tasks/rust-synapse-compress-state/compress_room.yml

@@ -12,7 +12,7 @@
       --network={{ matrix_docker_network }}
       --mount type=bind,src={{ matrix_synapse_rust_synapse_compress_state_base_path }},dst=/work
       {{ matrix_synapse_rust_synapse_compress_state_docker_image }}
-      /synapse-compress-state -t -o /work/state-compressor.sql
+      {{ matrix_synapse_rust_synapse_compress_state_synapse_compress_state_in_container_path }} -t -o /work/state-compressor.sql
       -p "host={{ matrix_synapse_database_host }} user={{ matrix_synapse_database_user }} password={{ matrix_synapse_database_password }} dbname={{ matrix_synapse_database_database }}"
       -r '{{ room_details.room_id }}'