diff --git a/openmapkit/Dockerfile b/openmapkit/Dockerfile
index e03778e..2b8ee80 100644
--- a/openmapkit/Dockerfile
+++ b/openmapkit/Dockerfile
@@ -1,20 +1,30 @@
 FROM alpine:3.7
 MAINTAINER Disassembler <disassembler@dasm.cz>
 
-RUN apk --no-cache add python2
+RUN \
+ # Install Python2 runtime
+ apk --no-cache add python2
 
-RUN apk --no-cache add --virtual .deps git build-base paxctl py2-pip \
- && apk --no-cache add nodejs git openjdk8-jre-base \
+RUN \
+ # Install runtime dependencies
+ apk --no-cache add nodejs git openjdk8-jre-base \
+ # Install build dependencies
+ && apk --no-cache add --virtual .deps git build-base paxctl py2-pip \
+ # Fix grsec attributes to loosen memory protection restrictions
  && paxctl -cm /usr/bin/node \
+ # Clone OpenMapKit
  && git clone --depth 1 https://github.com/AmericanRedCross/OpenMapKitServer /srv/openmapkit \
  && cd /srv/openmapkit \
  && git submodule update --init \
+ # Install OpenMapKit dependencies
  && pip install -r requirements.txt \
  && npm install -g yarn \
  && npm install libxmljs \
  && yarn \
+ # Create OS user
  && addgroup -S -g 8007 omk \
  && adduser -S -u 8007 -h /srv/openmapkit -s /bin/false -g omk -G omk omk \
+ # Cleanup
  && apk --no-cache del .deps \
  && rm -rf /srv/openmapkit/.git* /srv/openmapkit/api/odk/pyxform/.git* \
  && rm -rf /root \