Update Dockerfile for 18.04 and GCC 7

Copied from

https://github.com/peerplays-network/peerplays/blob/qa_gpos_18.04_gcc7_fix/Dockerfile

Dockerfile

@@ -1,44 +1,63 @@
-FROM phusion/baseimage:0.9.19
+FROM ubuntu:18.04
 MAINTAINER PeerPlays Blockchain Standards Association
 
-ENV LANG=en_US.UTF-8
+ENV LANG en_US.UTF-8
+ENV LANGUAGE en_US.UTF-8
+ENV LC_ALL en_US.UTF-8
+
 RUN \
     apt-get update -y && \
-    apt-get install -y \
-      g++ \
+      DEBIAN_FRONTEND=noninteractive apt-get install -y \
       autoconf \
-      cmake \
-      git \
-      libbz2-dev \
-      libreadline-dev \
-      libboost-all-dev \
-      libcurl4-openssl-dev \
-      libssl-dev \
-      libncurses-dev \
-      doxygen \
+      bash \
+      build-essential \
       ca-certificates \
+      cmake \
+      doxygen \
+      git \
+      graphviz \
+      libbz2-dev \
+      libcurl4-openssl-dev \
+      libncurses-dev \
+      libreadline-dev \
+      libssl-dev \
+      libtool \
+      locales \
+      ntp \
+      pkg-config \
+      wget \
     && \
-    apt-get update -y && \
-    apt-get install -y fish && \
     apt-get clean && \
     rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
 
+RUN \
+    sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen && \
+    locale-gen
+
+# Compile Boost
+RUN \
+    BOOST_ROOT=$HOME/boost_1_67_0 && \
+    wget -c 'http://sourceforge.net/projects/boost/files/boost/1.67.0/boost_1_67_0.tar.gz/download' -O boost_1_67_0.tar.gz &&\
+    tar -zxvf boost_1_67_0.tar.gz && \
+    cd boost_1_67_0/ && \
+    ./bootstrap.sh "--prefix=$BOOST_ROOT" && \
+    ./b2 install && \
+    cd ..
+
 ADD . /peerplays-core
 WORKDIR /peerplays-core
 
-# Compile
+# Compile Peerplays
 RUN \
-    ( git submodule sync --recursive || \
-      find `pwd`  -type f -name .git | \
-	while read f; do \
-	  rel="$(echo "${f#$PWD/}" | sed 's=[^/]*/=../=g')"; \
-	  sed -i "s=: .*/.git/=: $rel/=" "$f"; \
-	done && \
-      git submodule sync --recursive ) && \
+    BOOST_ROOT=$HOME/boost_1_67_0 && \
     git submodule update --init --recursive && \
+    mkdir build && \
+    mkdir build/release && \
+    cd build/release && \
     cmake \
+        -DBOOST_ROOT="$BOOST_ROOT" \
         -DCMAKE_BUILD_TYPE=Release \
-        . && \
+        ../.. && \
     make witness_node cli_wallet && \
     install -s programs/witness_node/witness_node programs/cli_wallet/cli_wallet /usr/local/bin && \
     #