Redoing mitmproxy for the ubuntu image to workaround building pillow==3.0 on Alpine Linux

mitmproxy/Dockerfile

@@ -1,19 +1,31 @@
-FROM alpine:latest
+FROM ubuntu:latest
 MAINTAINER Jessica Frazelle <jess@docker.com>
 
+RUN apt-get update && apt-get install -y \
+        python \
+        python-dev \
+        python-virtualenv 
+
+RUN buildDeps=' \
+        libjpeg8-dev \
+        libffi-dev \
+        libssl-dev \
+        libxml2-dev \
+        libxslt1-dev \
+        zlib1g-dev \
+    ' \
+    && set -x \
+    && apt-get install -y ${buildDeps} --no-install-recommends \
+    && useradd -m mitm \
+    && su -c "virtualenv /home/mitm/mitmproxy" mitm \
+    && su -c "/home/mitm/mitmproxy/bin/pip install Pillow==3.0 mitmproxy" mitm \
+    && apt-get purge -y --auto-remove ${buildDeps} build-essential gcc \
+    && rm -rf /var/lib/apt/lists/* 
+
+EXPOSE 8080
+
+ENV HOME /home/mitm
 ENV LANG en_US.UTF-8
 
-RUN apk update && apk add \
-	build-base \
-	ca-certificates \
-	libffi-dev \
-	libxml2-dev \
-	libxslt-dev \
-	openssl-dev \
-	python \
-	python-dev \
-	py-pip \
-	&& rm -rf /var/cache/apk/* \
-	&& pip install pillow==2.8.0 mitmproxy
-
-CMD [ "mitmproxy" ]
+USER mitm
+CMD [ "/home/mitm/mitmproxy/bin/python", "/home/mitm/mitmproxy/bin/mitmproxy" ]