Update Dockerfile

Dockerfile

@@ -5,13 +5,13 @@
 #
 
 # Pull base image.
-FROM github.com/dockerfile/ubuntu
+#FROM github.com/dockerfile/ubuntu
+FROM haproxytech/haproxy-debian:2.7
 
 # Install Haproxy.
 RUN \
-  sed -i 's/^# \(.*-backports\s\)/\1/g' /etc/apt/sources.list && \
-  apt-get update && \
-  apt-get install -y haproxy=1.5.3-1~ubuntu14.04.1 && \
+  sed -i 's/^# \(.*-backports\s\)/\1/g' /etc/apt/sources.list && apt-get update && \
+  #apt-get install -y haproxy=1.5.3-1~ubuntu14.04.1 && \
   sed -i 's/^ENABLED=.*/ENABLED=1/' /etc/default/haproxy && \
   rm -rf /var/lib/apt/lists/*