diff --git a/Dockerfile b/Dockerfile
index a32a77aa..7ffdd17d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,29 +1,42 @@
 # A simple Dockerfile for building Kvazaar from the git repository
 # Example build command when in this directory: docker build -t kvazaar .
+#
+# Example usage
+# Run with an input YUV file and output HEVC binary file
+#     docker run -i -a STDIN -a STDOUT kvazaar -i - --input-res=320x240 -o - < testfile_320x240.yuv > out.265
+#
+# Use libav or ffmpeg to input (almost) any format and convert it to YUV420 for kvazaar, audio is disabled
+#
+#     RESOLUTION=`avconv -i input.avi 2>&1 | grep Stream | grep -oP ', \K[0-9]+x[0-9]+'`
+#     avconv -i input.avi -an -f rawvideo -pix_fmt yuv420p - | docker run -i -a STDIN -a STDOUT kvazaar -i - --wpp --threads=8 --input-res=$RESOLUTION --preset=ultrafast -o - > output.265
+#  or 
+#     RESOLUTION=`ffmpeg -i input.avi 2>&1 | grep Stream | grep -oP ', \K[0-9]+x[0-9]+'`
+#     ffmpeg -i input.avi -an -f rawvideo -pix_fmt yuv420p - | docker run -i -a STDIN -a STDOUT kvazaar -i - --wpp --threads=8 --input-res=$RESOLUTION --preset=ultrafast -o - > output.265
+#
 
 # Use Ubuntu 15.10 as a base for now, it's around 136MB
 FROM ubuntu:15.10
 
+MAINTAINER Marko Viitanen <fador@iki.fi>
+
     # List of needed packages to be able to build kvazaar with autotools
     ENV REQUIRED_PACKAGES automake autoconf libtool m4 build-essential git yasm
     
-    # Running update causes extra data to be stored in the image
-    # We don't need to update right now.
-    #RUN apt-get update
-    
     # Run all the commands in one RUN so we don't have any extra history
     # data in the image.
-    RUN apt-get install -y $REQUIRED_PACKAGES ; \
-    git clone --depth=1 git://github.com/ultravideo/kvazaar.git; \
+    RUN apt-get update \
+    && apt-get install -y $REQUIRED_PACKAGES \
+    && apt-get clean \
+    && git clone --depth=1 git://github.com/ultravideo/kvazaar.git; \
         cd kvazaar; \
         ./autogen.sh; \
         ./configure --disable-shared;\
         make;\
-    AUTOINSTALLED_PACKAGES=`apt-mark showauto`;\
-    apt-get remove --purge -y $REQUIRED_PACKAGES $AUTOINSTALLED_PACKAGES; \
+    AUTOINSTALLED_PACKAGES=`apt-mark showauto`; \
+    apt-get remove --purge --force-yes -y $REQUIRED_PACKAGES $AUTOINSTALLED_PACKAGES; \
+        apt-get clean autoclean; \
         apt-get autoremove -y; \
-        apt-get clean all; \
-        rm -rf /var/lib/apt/lists/*
+        rm -rf /var/lib/{apt,dpkg,cache,log}/
     # Because we build only the static binary, copy that to the root
     COPY src/kvazaar /
 ENTRYPOINT ["/kvazaar"]