Add dockerfile and filebeat config

Dockerfile

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+FROM ubuntu
+
+MAINTAINER Amanpreet Singh <[email protected]>
+
+ENV FILEBEAT_VERSION 1.2.2
+
+RUN apt-get update && \
+    apt-get -y install wget && \
+    wget http://download.elastic.co/beats/filebeat/filebeat-${FILEBEAT_VERSION}-x86_64.tar.gz && \
+    wget https://download.elastic.co/beats/filebeat/filebeat-${FILEBEAT_VERSION}-x86_64.tar.gz.sha1.txt && \
+    sha1sum -c filebeat-${FILEBEAT_VERSION}-x86_64.tar.gz.sha1.txt && \
+    tar xzf filebeat-${FILEBEAT_VERSION}-x86_64.tar.gz && \
+    mv filebeat-${FILEBEAT_VERSION}-x86_64/filebeat /usr/local/bin && \
+    rm -rf /filebeat* && \
+    apt-get -y remove wget && \
+    apt-get -y autoremove
+
+COPY filebeat.yml /etc/filebeat/
+
+CMD ["/usr/local/bin/filebeat", "-e", "-c", "/etc/filebeat/filebeat.yml"]
+

filebeat.yml

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+filebeat:
+  prospectors:
+    -
+      paths:
+        - "/var/log/containers/*.log"
+      document_type: kube-logs
+
+output:
+  logstash:
+    hosts: [${LOGSTASH_HOSTS:'logstash:5043'}]
+    timeout: 15
+
+logging:
+  level: ${LOG_LEVEL:error}
+