refactor Dockerfile

Dockerfile

-FROM ubuntu:14.04.2
-
-## Environment setup
-ENV HOME /root
-ENV GOPATH /root/go
-ENV PATH /root/go/bin:/usr/local/go/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
-
-RUN mkdir -p /root/go
-ENV DEBIAN_FRONTEND noninteractive
-
-## Install base dependencies
-RUN apt-get update && apt-get upgrade -y
-RUN apt-get install -y git mercurial build-essential software-properties-common wget pkg-config libgmp3-dev libreadline6-dev libpcre3-dev libpcre++-dev
-
-## Install Qt5.4.1 (not required for CLI)
-# RUN add-apt-repository ppa:beineri/opt-qt541-trusty -y
-# RUN apt-get update -y
-# RUN apt-get install -y qt54quickcontrols qt54webengine mesa-common-dev libglu1-mesa-dev
-# ENV PKG_CONFIG_PATH /opt/qt54/lib/pkgconfig
-
-# Install Golang
-RUN wget https://storage.googleapis.com/golang/go1.4.2.linux-amd64.tar.gz
-RUN tar -C /usr/local -xzf go*.tar.gz && go version
-
-# this is a workaround, to make sure that docker's cache is invalidated whenever the git repo changes
-ADD https://api.github.com/repos/ethereum/go-ethereum/git/refs/heads/develop file_does_not_exist
-
-## Fetch and install go-ethereum
-RUN mkdir -p $GOPATH/src/github.com/ethereum/
-RUN git clone https://github.com/ethereum/go-ethereum $GOPATH/src/github.com/ethereum/go-ethereum
-WORKDIR $GOPATH/src/github.com/ethereum/go-ethereum
-RUN git checkout develop
-RUN GOPATH=$GOPATH:$GOPATH/src/github.com/ethereum/go-ethereum/Godeps/_workspace go install -v ./cmd/geth
-
-## Run & expose JSON RPC
-ENTRYPOINT ["geth", "-rpc=true", "-rpcport=8545"]
-EXPOSE 8545
-
-

docker/Dockerfile

+FROM ubuntu:utopic
+MAINTAINER caktux
+
+ENV DEBIAN_FRONTEND noninteractive
+
+# Usual update / upgrade
+RUN apt-get update
+RUN apt-get upgrade -q -y
+RUN apt-get dist-upgrade -q -y
+
+# Let our containers upgrade themselves
+RUN apt-get install -q -y unattended-upgrades
+
+# Install Ethereum
+RUN apt-get install -q -y software-properties-common
+RUN add-apt-repository ppa:ethereum/ethereum
+RUN add-apt-repository ppa:ethereum/ethereum-dev
+RUN apt-get update
+RUN apt-get install -q -y geth
+
+# Install supervisor
+RUN apt-get install -q -y supervisor
+
+# Add supervisor configs
+ADD supervisord.conf supervisord.conf
+
+EXPOSE 8545
+EXPOSE 30303
+
+CMD ["-n", "-c", "/supervisord.conf"]
+ENTRYPOINT ["/usr/bin/supervisord"]

docker/supervisord.conf

+[supervisord]
+nodaemon=false
+
+[program:geth]
+priority=30
+directory=/
+command=geth --rpc
+user=root
+autostart=true
+autorestart=true
+startsecs=10
+stopsignal=QUIT
+stdout_logfile=/var/log/geth.log
+stderr_logfile=/var/log/geth.err
+
+[unix_http_server]
+file=%(here)s/supervisor.sock
+
+[supervisorctl]
+serverurl=unix://%(here)s/supervisor.sock
+
+[rpcinterface:supervisor]
+supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface
\ No newline at end of file