1 files changed, 3 insertions, 1 deletions
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 20d3fe3bd8..ad0ae0b734 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,4 +1,5 @@
-FROM docker.io/python:2-alpine3.8
+ARG PYTHON_VERSION=2
+FROM docker.io/python:${PYTHON_VERSION}-alpine3.8
 
 COPY . /synapse
 
@@ -12,6 +13,7 @@ RUN apk add --no-cache --virtual .build_deps \
         postgresql-dev \
         zlib-dev \
  && cd /synapse \
+ && sed -i 's/\["synctl"\] + //' setup.py \
  && apk add --no-cache --virtual .runtime_deps \
  	libffi \
         libjpeg-turbo \