grouping things, documentation

Author: caarlos0

Diff for: Dockerfile

@@ -2,20 +2,21 @@
 FROM ubuntu:14.04
 MAINTAINER Carlos Alexandro Becker <[email protected]>
 
-RUN sudo apt-get install -y software-properties-common
-RUN sudo add-apt-repository -y ppa:webupd8team/java
-RUN sudo apt-get update
-RUN echo oracle-java6-installer shared/accepted-oracle-license-v1-1 select true | /usr/bin/debconf-set-selections
-RUN sudo apt-get install -y oracle-java6-installer
-RUN sudo update-java-alternatives -s java-6-oracle
+RUN sudo apt-get install -y software-properties-common && \
+  sudo add-apt-repository -y ppa:webupd8team/java && \
+  sudo apt-get update
+
+RUN echo oracle-java6-installer shared/accepted-oracle-license-v1-1 select true | /usr/bin/debconf-set-selections && \
+  sudo apt-get install -y oracle-java6-installer && \
+  sudo update-java-alternatives -s java-6-oracle
 
 RUN sudo apt-get -y install git
 
-RUN wget -O /tmp/maven.tar.gz http://mirror.nbtelecom.com.br/apache/maven/maven-3/3.2.5/binaries/apache-maven-3.2.5-bin.tar.gz
-RUN sudo tar xzvf /tmp/maven.tar.gz -C /tmp
-RUN rm -rf /tmp/maven.tar.gz
-RUN sudo mv /tmp/apache-maven-3.2.5 /usr/share/maven3
-RUN sudo ln -s /usr/share/maven3/bin/mvn /usr/bin/mvn
+RUN wget -O /tmp/maven.tar.gz http://mirror.nbtelecom.com.br/apache/maven/maven-3/3.2.5/binaries/apache-maven-3.2.5-bin.tar.gz && \
+  sudo tar xzvf /tmp/maven.tar.gz -C /tmp && \
+  rm -rf /tmp/maven.tar.gz && \
+  sudo mv /tmp/apache-maven-3.2.5 /usr/share/maven3 && \
+  sudo ln -s /usr/share/maven3/bin/mvn /usr/bin/mvn
 
 ENV M2_HOME /usr/share/maven3
 ENV PATH $M2_HOME/bin:$PATH

Diff for: README-short.txt

@@ -0,0 +1 @@
+A Docker image with Oracle JDK6, Maven 3.2.5 and Git.