Update Dockerfile

Include these changes
mattes#29

Dockerfile

@@ -1,20 +1,20 @@
-FROM ubuntu:14.04
+FROM ubuntu:18.04
 MAINTAINER Matthias Kadenbach <[email protected]>
 
-RUN echo 'deb http://deb.torproject.org/torproject.org trusty main' | tee /etc/apt/sources.list.d/torproject.list
-RUN gpg --keyserver keys.gnupg.net --recv 886DDD89
-RUN gpg --export A3C4F0F979CAA22CDBA8F512EE8CBC9E886DDD89 | apt-key add -
+RUN echo 'deb http://deb.torproject.org/torproject.org trusty main' | tee /etc/apt/sources.list.d/torproject.list && \
+ gpg --keyserver keys.gnupg.net --recv 886DDD89 && \
+  gpg --export A3C4F0F979CAA22CDBA8F512EE8CBC9E886DDD89 | apt-key add -
 
-RUN echo 'deb http://ppa.launchpad.net/brightbox/ruby-ng/ubuntu trusty main' | tee /etc/apt/sources.list.d/ruby.list
-RUN gpg --keyserver keyserver.ubuntu.com --recv C3173AA6
-RUN gpg --export 80f70e11f0f0d5f10cb20e62f5da5f09c3173aa6 | apt-key add -
+RUN echo 'deb http://ppa.launchpad.net/brightbox/ruby-ng/ubuntu trusty main' | tee /etc/apt/sources.list.d/ruby.list && \
+ gpg --keyserver keyserver.ubuntu.com --recv C3173AA6 && \
+  gpg --export 80f70e11f0f0d5f10cb20e62f5da5f09c3173aa6 | apt-key add -
 
 RUN apt-get update && \
  apt-get install -y tor polipo haproxy ruby2.1 libssl-dev wget curl build-essential zlib1g-dev libyaml-dev libssl-dev && \
  ln -s /lib/x86_64-linux-gnu/libssl.so.1.0.0 /lib/libssl.so.1.0.0
 
-RUN update-rc.d -f tor remove
-RUN update-rc.d -f polipo remove
+RUN update-rc.d -f tor remove && \
+  update-rc.d -f polipo remove
 
 RUN gem install excon -v 0.44.4
 
@@ -27,6 +27,6 @@ RUN chmod +x /usr/local/bin/newnym.sh
 ADD haproxy.cfg.erb /usr/local/etc/haproxy.cfg.erb
 ADD uncachable /etc/polipo/uncachable
 
-EXPOSE 5566 4444
+EXPOSE 5566 4646
 
 CMD /usr/local/bin/start.rb