diff --git a/Dockerfile b/Dockerfile
index 72eb5668..7c3a9dd9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,12 @@
-FROM python:3.5
+FROM alpine:3.4
+
+# from https://github.com/frol/docker-alpine-python3
+RUN apk add --no-cache python3 && \
+    python3 -m ensurepip && \
+    rm -r /usr/lib/python*/ensurepip && \
+    pip3 install --upgrade pip setuptools && \
+    rm -r /root/.cache
+
 ADD . /code
 WORKDIR /code
 RUN pip install gunicorn