Add Dockerfile to complement TravisCI

Dockerfile

@@ -0,0 +1,18 @@
+FROM alpine:latest
+MAINTAINER Jayce Gregg <jaycegregg0@gmail.com>
+
+#
+# To start a webserver for viewing the HTML version of this project run this:
+# cd /src && while true ; do nc -l 80 < index.html ; done
+#
+
+RUN apk add ruby2.2 \
+            ruby2.2-json --no-cache \
+ && rm -rf /var/cache/apk/* \
+ && gem2.2 install awesome_bot --no-ri --no-rdoc
+
+COPY . /src
+WORKDIR /src
+
+CMD ["awesome_bot", "README.md", "--allow-dupe", "--allow-redirect", \
+     "--allow-ssl", "--allow-timeout", "--allow", "999,403,405,500"]