Merge pull request #3882 from SimmyD/max_upload_docker_var

Add variable for changing the max upload size in Docker container

changelog.d/3883.feature

@@ -0,0 +1 @@
+Adding the ability to change MAX_UPLOAD_SIZE for the docker container variables.

docker/README.md

@@ -88,6 +88,7 @@ variables are available for configuration:
 * ``SYNAPSE_TURN_URIS``, set this variable to the coma-separated list of TURN
   uris to enable TURN for this homeserver.
 * ``SYNAPSE_TURN_SECRET``, set this to the TURN shared secret if required.
+* ``SYNAPSE_MAX_UPLOAD_SIZE``, set this variable to change the max upload size [default `10M`].
 
 Shared secrets, that will be initialized to random values if not set:
 

docker/conf/homeserver.yaml

@@ -85,7 +85,7 @@ federation_rc_concurrent: 3
 
 media_store_path: "/data/media"
 uploads_path: "/data/uploads"
-max_upload_size: "10M"
+max_upload_size: "{{ SYNAPSE_MAX_UPLOAD_SIZE or "10M" }}"
 max_image_pixels: "32M"
 dynamic_thumbnails: false