diff --git a/Dockerfile b/Dockerfile
index 702f93f..02638f5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,33 +7,44 @@ EXPOSE 1935
 EXPOSE 80
 
 # create directories
-RUN mkdir /src && mkdir /config && mkdir /logs && mkdir /data && mkdir /static
+RUN mkdir /src /config /logs /data /static
 
 # update and upgrade packages
-RUN apt-get update && apt-get upgrade -y && apt-get clean
-RUN apt-get install -y build-essential wget
-
+RUN apt-get update && \
+  apt-get upgrade -y && \
+  apt-get clean && \
+  apt-get install -y --no-install-recommends build-essential \
+  wget software-properties-common && \
 # ffmpeg
-RUN apt-get install -y software-properties-common
-RUN add-apt-repository ppa:mc3man/trusty-media
-RUN apt-get update
-RUN apt-get install -y ffmpeg
-
+  add-apt-repository ppa:mc3man/trusty-media && \
+  apt-get update && \
+  apt-get install -y --no-install-recommends ffmpeg && \
 # nginx dependencies
-RUN apt-get install -y libpcre3-dev zlib1g-dev libssl-dev
-RUN apt-get install -y wget
+  apt-get install -y --no-install-recommends libpcre3-dev \
+  zlib1g-dev libssl-dev wget && \
+  rm -rf /var/lib/apt/lists/*
 
 # get nginx source
-RUN cd /src && wget http://nginx.org/download/nginx-1.6.2.tar.gz && tar zxf nginx-1.6.2.tar.gz && rm nginx-1.6.2.tar.gz
-
+WORKDIR /src
+RUN wget http://nginx.org/download/nginx-1.6.2.tar.gz && \
+  tar zxf nginx-1.6.2.tar.gz && \
+  rm nginx-1.6.2.tar.gz && \
 # get nginx-rtmp module
-RUN cd /src && wget https://github.com/arut/nginx-rtmp-module/archive/v1.1.6.tar.gz && tar zxf v1.1.6.tar.gz && rm v1.1.6.tar.gz
+  wget https://github.com/arut/nginx-rtmp-module/archive/v1.1.6.tar.gz && \
+  tar zxf v1.1.6.tar.gz && \
+  rm v1.1.6.tar.gz
 
 # compile nginx
-RUN cd /src/nginx-1.6.2 && ./configure --add-module=/src/nginx-rtmp-module-1.1.6 --conf-path=/config/nginx.conf --error-log-path=/logs/error.log --http-log-path=/logs/access.log
-RUN cd /src/nginx-1.6.2 && make && make install
+WORKDIR /src/nginx-1.6.2
+RUN ./configure --add-module=/src/nginx-rtmp-module-1.1.6 \
+  --conf-path=/config/nginx.conf \
+  --error-log-path=/logs/error.log \
+  --http-log-path=/logs/access.log && \
+  make && \
+  make install
 
 ADD nginx.conf /config/nginx.conf
 ADD static /static
 
+WORKDIR /
 CMD "nginx"