Add Docker container, update readme and fix indentations

docker/Dockerfile

@@ -0,0 +1,43 @@
+FROM centos:latest
+
+MAINTAINER Roni Väyrynen <roni@vayrynen.info>
+
+# Install set of dependencies to support running Xen-Orchestra
+
+# Node v6
+RUN curl -s -L https://rpm.nodesource.com/setup_6.x | bash -
+
+# yarn for installing node packages
+RUN curl -s -o /etc/yum.repos.d/yarn.repo https://dl.yarnpkg.com/rpm/yarn.repo
+RUN yum -y install yarn
+
+# epel-release for various packages not available from base repo
+RUN yum -y install epel-release
+
+# build dependencies, git for fetchin source and redis server for storing ata
+RUN yum -y install gcc gcc-c++ make openssl-devel redis libpng-devel python git
+
+# monit to keep an eye on processes
+RUN yum -y install monit
+ADD monit-services /etc/monit.d/services
+
+# Fetch Xen-Orchestra sources from git stable branch
+RUN git clone -b stable http://github.com/vatesfr/xo-server /etc/xo-server
+RUN git clone -b stable http://github.com/vatesfr/xo-web /etc/xo-web
+
+# Run build tasks against sources
+RUN cd /etc/xo-server && yarn
+RUN cd /etc/xo-web && yarn
+
+# Fix path for xo-web content in xo-server configuration
+RUN sed -i "s/#'\/': '\/path\/to\/xo-web\/dist\//'\/': '..\/xo-web\/dist\//" /etc/xo-server/sample.config.yaml
+
+# Move edited config sample to place
+RUN mv /etc/xo-server/sample.config.yaml /etc/xo-server/.xo-server.yaml
+
+# Install forever for starting/stopping Xen-Orchestra
+RUN npm install forever -g
+
+WORKDIR /etc/xo-server
+
+CMD ["/usr/bin/monit"]