Add Dockerfiles and update readme.

docker/Dockerfile_centos_5

+FROM centos:5
+MAINTAINER Ross McDonald <mcdonaldrossc+docker@gmail.com>
+
+# Install necessary Ansible dependencies
+RUN yum install -y wget && \
+    wget dl.fedoraproject.org/pub/epel/5/x86_64/epel-release-5-4.noarch.rpm && \
+    rpm -ivh epel-release-5-4.noarch.rpm && \
+    rm -f epel-release-5-4.noarch.rpm && \
+    yum install -y python26 gcc make
+    
+RUN wget --no-check-certificate https://bootstrap.pypa.io/get-pip.py && \
+    python26 get-pip.py && \
+    rm -f get-pip.py
+
+RUN pip2.6 install ansible
+
+ENV PROJECT_DIR /root
+RUN mkdir -p $PROJECT_DIR
+
+WORKDIR $PROJECT_DIR
+VOLUME $PROJECT_DIR
+ENTRYPOINT [ "ansible-playbook", "-c", "local", "-e", "is_docker=true", "-i", "localhost," ]

docker/Dockerfile_centos_6

+FROM centos:6
+MAINTAINER Ross McDonald <mcdonaldrossc+docker@gmail.com>
+
+RUN yum install -y wget && \
+    wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-6.noarch.rpm && \
+    rpm -ivh epel-release-latest-6.noarch.rpm && \
+    rm -f epel-release-latest-6.noarch.rpm
+    
+RUN yum install -y ansible
+
+ENV PROJECT_DIR /root
+RUN mkdir -p $PROJECT_DIR
+
+WORKDIR $PROJECT_DIR
+VOLUME $PROJECT_DIR
+ENTRYPOINT [ "ansible-playbook", "-c", "local", "-e", "is_docker=true", "-i", "localhost," ]

docker/Dockerfile_centos_7

+FROM centos:7
+MAINTAINER Ross McDonald <mcdonaldrossc+docker@gmail.com>
+
+RUN yum install -y wget && \
+    wget https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm && \
+    rpm -ivh epel-release-latest-7.noarch.rpm && \
+    rm -f epel-release-latest-7.noarch.rpm
+    
+RUN yum install -y ansible
+
+ENV PROJECT_DIR /root
+RUN mkdir -p $PROJECT_DIR
+
+WORKDIR $PROJECT_DIR
+VOLUME $PROJECT_DIR
+ENTRYPOINT [ "ansible-playbook", "-c", "local", "-e", "is_docker=true", "-i", "localhost," ]

docker/Dockerfile_ubuntu_trusty

+FROM ubuntu:trusty
+MAINTAINER Ross McDonald <mcdonaldrossc+docker@gmail.com>
+
+RUN apt-get update && \
+    apt-get install -y \
+    python-apt \
+    python-pip \
+    python-dev \
+    python-setuptools
+
+RUN pip install ansible
+
+ENV PROJECT_DIR /root
+RUN mkdir -p $PROJECT_DIR
+
+WORKDIR $PROJECT_DIR
+VOLUME $PROJECT_DIR
+ENTRYPOINT [ "ansible-playbook", "-c", "local", "-e", "is_docker=true", "-i", "localhost," ]

docker/Dockerfile_ubuntu_wily

+FROM ubuntu:wily
+MAINTAINER Ross McDonald <mcdonaldrossc+docker@gmail.com>
+
+RUN apt-get update && \
+    apt-get install -y \
+    python-apt \
+    python-pip \
+    python-dev \
+    python-setuptools
+
+RUN pip install ansible
+
+ENV PROJECT_DIR /root
+RUN mkdir -p $PROJECT_DIR
+
+WORKDIR $PROJECT_DIR
+VOLUME $PROJECT_DIR
+ENTRYPOINT [ "ansible-playbook", "-c", "local", "-e", "is_docker=true", "-i", "localhost," ]

docker/Dockerfile_ubuntu_xenial

+FROM ubuntu:xenial
+MAINTAINER Ross McDonald <mcdonaldrossc+docker@gmail.com>
+
+RUN apt-get update && \
+    apt-get install -y \
+    python-apt \
+    python-pip \
+    python-dev \
+    python-setuptools
+
+RUN pip install ansible
+
+ENV PROJECT_DIR /root
+RUN mkdir -p $PROJECT_DIR
+
+WORKDIR $PROJECT_DIR
+VOLUME $PROJECT_DIR
+ENTRYPOINT [ "ansible-playbook", "-c", "local", "-e", "is_docker=true", "-i", "localhost," ]

docker/build.sh

+#!/bin/bash
+# This script will build all of the needed containers
+
+function err {
+    echo "ERROR: $@"
+    exit 1
+}
+
+echo "Building CentOS containers..."
+docker build -f Dockerfile_centos_6 -t ansible.influxdb.centos.6:latest . || err "Could not build CentOS 6 container"
+docker build -f Dockerfile_centos_7 -t ansible.influxdb.centos.7:latest . || err "Could not build CentOS 6 container"
+
+echo "Building Ubuntu containers..."
+docker build -f Dockerfile_ubuntu_trusty -t ansible.influxdb.ubuntu.trusty:latest . || err "Could not build Ubuntu Trusty container"
+docker build -f Dockerfile_ubuntu_wily -t ansible.influxdb.ubuntu.wily:latest . || err "Could not build Ubuntu Wily container"
+docker build -f Dockerfile_ubuntu_xenial -t ansible.influxdb.ubuntu.xenial:latest . || err "Could not build Ubuntu Xenial container"