diff --git a/rootfs/Dockerfile b/rootfs/Dockerfile
index d4537fb..ec56b03 100644
--- a/rootfs/Dockerfile
+++ b/rootfs/Dockerfile
@@ -5,7 +5,6 @@ MAINTAINER Keitaro Inc <info@keitaro.info>
 ENV APP_DIR=/srv/app
 ENV GIT_URL=https://github.com/ckan/ckan.git
 ENV GIT_BRANCH=release-v2.5.2
-ENV APP_WSGI=ckan.wsgi
 ENV CKAN_SITE_URL=http://localhost
 ENV CKAN__PLUGINS image_view text_view recline_view datastore datapusher envvars
 
@@ -14,14 +13,14 @@ WORKDIR ${APP_DIR}
 # Install necessary packages to run CKAN
 RUN apk add --no-cache git \
     gettext \
-    postgresql-client \
-    postgresql-dev \
     python \
     py-pip \
     py-gunicorn 
 
 # Temporary packages to build CKAN requirements
 RUN apk add --no-cache --virtual .build-deps \
+    postgresql-client \
+    postgresql-dev \
     gcc \
     musl-dev \
     python-dev
@@ -36,8 +35,9 @@ RUN mkdir ${APP_DIR}/src && cd ${APP_DIR}/src && \
     pip install --no-cache-dir --upgrade -r requirements.txt && \
     pip install --no-cache-dir html5lib==0.9999999
 
-# Remove temporary packages
-RUN apk del .build-deps
+# Remove temporary packages and files
+RUN apk del .build-deps && \
+    rm -rf ${APP_DIR}/src
 
 # Default Extensions
 RUN pip install --no-cache-dir git+https://github.com/okfn/ckanext-envvars.git#egg=ckanext-envvars