add synapse-auto-compressor workaround, fixes #3397 (#3473)

* add synapse-auto-compressor workaround, fixes #3397

* Clarify what the PG-prefixed variables are for

---------

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

roles/custom/matrix-synapse-auto-compressor/tasks/install.yml

@@ -14,7 +14,7 @@
     - path: "{{ matrix_synapse_auto_compressor_container_src_files_path }}"
       when: "{{ matrix_synapse_auto_compressor_container_image_self_build }}"
 
-- name: Ensure synapse-auto-compressor labels installed
+- name: Ensure synapse-auto-compressor env file is installed
   ansible.builtin.template:
     src: "{{ role_path }}/templates/env.j2"
     dest: "{{ matrix_synapse_auto_compressor_base_path }}/env"
@@ -22,6 +22,14 @@
     owner: "{{ matrix_user_username }}"
     group: "{{ matrix_user_groupname }}"
 
+- name: Ensure synapse-auto-compressor workaround script is installed
+  ansible.builtin.template:
+    src: "{{ role_path }}/templates/matrix-synapse-auto-compressor-fix.sh.j2"
+    dest: "{{ matrix_synapse_auto_compressor_base_path }}/matrix-synapse-auto-compressor-fix.sh"
+    mode: 0750
+    owner: "{{ matrix_user_username }}"
+    group: "{{ matrix_user_groupname }}"
+
 - name: Ensure synapse-auto-compressor image is pulled
   community.docker.docker_image:
     name: "{{ matrix_synapse_auto_compressor_container_image }}"