Merge pull request #11 from wk/introduce-dockerfile

introduce trivial dockerfile

Dockerfile

@@ -0,0 +1,10 @@
+# -- trivial container for bgpalerter
+FROM node:10-alpine as build
+
+WORKDIR /opt/bgpalerter
+COPY . .
+
+RUN yarn
+
+ENTRYPOINT ["npm"]
+CMD ["run", "serve"]