Become compatible with official matrix-appservice-irc Docker image

This change allows us to work with both our existing Docker image
(`tedomum/matrix-appservice-irc:latest`) and with the
official Docker image (`matrixdotorg/matrix-appservice-irc`).

The actual change to the official Docker image requires more testing
and will be done separately.

roles/matrix-bridge-appservice-irc/tasks/setup_install.yml

@@ -98,13 +98,15 @@
     --cap-drop=ALL
     -v {{ matrix_appservice_irc_config_path }}:/config:z
     -v {{ matrix_appservice_irc_data_path }}:/data:z
+    --entrypoint=/bin/bash
     {{ matrix_appservice_irc_docker_image }}
-    node app.js
+    -c
+    'node app.js
     -r
     -f /config/registration-template.yaml
     -u "http://matrix-appservice-irc:9999"
     -c /config/config.yaml
-    -l irc_bot
+    -l irc_bot'
   changed_when: false
 
 - name: Read Appservice IRC registration-template.yaml

roles/matrix-bridge-appservice-irc/templates/systemd/matrix-appservice-irc.service.j2

@@ -30,8 +30,9 @@ ExecStart=/usr/bin/docker run --rm --name matrix-appservice-irc \
 			{% for arg in matrix_appservice_irc_container_extra_arguments %}
 			{{ arg }} \
 			{% endfor %}
+			--entrypoint=/bin/bash \
 			{{ matrix_appservice_irc_docker_image }} \
-			-c /config/config.yaml -f /config/registration.yaml -p 9999
+			-c 'node app.js -c /config/config.yaml -f /config/registration.yaml -p 9999'
 
 ExecStop=-/usr/bin/docker kill matrix-appservice-irc
 ExecStop=-/usr/bin/docker rm matrix-appservice-irc