Fix the Dockerfile to allow building

I'm having issues building reef-pi on an ARM mac. To workaround that I'm trying
to build under Docker. It appears this Dockerfile is old, and possibly not been
getting used. For example the node version it was using is very dated.

This updates the Dockerfile so at a minimum I am able to build the docker image
and within it build deb:

```
\# Build docker image and run it
$ docker build --platform=linux/amd64 -t debugreef
$ docker run -it debugreef bash

\# Within that image build reef-pi
$ make bin
$ make deb
...
Created package {:path=>"reef-pi-5.2-72-g7e5eeb6e.deb"}
```

Dockerfile

@@ -4,30 +4,33 @@ FROM debian:stretch
 LABEL maintainer="code@reef-pi.com"
 
 RUN apt-get update -y && \
-    apt-get install curl build-essential git mercurial -y
+    apt-get install curl build-essential git mercurial ruby-dev -y
 
-RUN curl -sL https://deb.nodesource.com/setup_8.x | bash - && \
+RUN curl -sL https://deb.nodesource.com/setup_16.x | bash - && \
     apt-get install -y nodejs && \
     npm install -g npm
-RUN curl https://dl.google.com/go/go1.12.4.linux-amd64.tar.gz > /tmp/go1.12.4.linux-amd64.tar.gz && \
-    tar xvzf /tmp/go1.12.4.linux-amd64.tar.gz -C /usr/local
+RUN curl -L https://go.dev/dl/go1.13.15.linux-amd64.tar.gz > /tmp/go1.13.15.linux-amd64.tar.gz && \
+    tar xvzf /tmp/go1.13.15.linux-amd64.tar.gz -C /usr/local
 
+RUN npm install --global yarn
+
+RUN gem install bundler
 
 ENV GOPATH=/gopath
 ENV PATH="/usr/local/go/bin:${GOPATH}/bin:${PATH}"
 
 RUN mkdir -p /gopath/src/github.com/reef-pi/reef-pi
 WORKDIR /gopath/src/github.com/reef-pi/reef-pi
 
-# Bootstrap dependencies 
-COPY Makefile package.json package-lock.json /gopath/src/github.com/reef-pi/reef-pi/
+COPY Gemfile Gemfile.lock /gopath/src/github.com/reef-pi/reef-pi/
+RUN bundle install
+
+# Bootstrap dependencies
+COPY Makefile package.json /gopath/src/github.com/reef-pi/reef-pi/
 RUN npm install
 
-COPY Gopkg.lock Gopkg.toml controller/ /gopath/src/github.com/reef-pi/reef-pi/
+COPY controller/ /gopath/src/github.com/reef-pi/reef-pi/controller/
 RUN make go-get
 
 # Copy the rest of the code base for building
 COPY . /gopath/src/github.com/reef-pi/reef-pi/
-
-RUN make bin
-USER 9000