move docker stuff

Dockerfile

@@ -0,0 +1,23 @@
+FROM ruby:2.3-slim
+MAINTAINER WPScan Team <team@wpscan.org>
+
+RUN DEBIAN_FRONTEND=noninteractive && \
+  apt-get update && \
+  apt-get -qq -y install curl git ca-certificates openssl libcurl4-openssl-dev libxml2 libxml2-dev libxslt1-dev build-essential procps
+
+RUN useradd -d /wpscan wpscan
+RUN echo "gem: --no-ri --no-rdoc" > /etc/gemrc
+RUN mkdir /wpscan
+
+COPY . /wpscan
+
+WORKDIR /wpscan
+
+RUN bundle install --without test
+RUN chown -R wpscan:wpscan /wpscan
+
+USER wpscan
+RUN /wpscan/wpscan.rb --update
+
+ENTRYPOINT ["/wpscan/wpscan.rb"]
+CMD ["--help"]