add dockerfile

Dockerfile

+FROM node:dubnium-stretch
+
+ENV HTTP_PROXY=http://httpproxy.c3sl.ufpr.br:3128/
+
+ENV HTTPS_PROXY=http://httpproxy.c3sl.ufpr.br:3128/
+
+RUN npm install --global gulp gulp-cli babel babel-cli babel-core babel-register mocha gulp-mocha gulp-eslint istanbul --force
+
+RUN npm un -g gulp
+
+RUN npm i -g gulp@3.9.0
+
+RUN mkdir API
+
+COPY . ./API
+
+WORKDIR ./API
+
+RUN npm install
+
+RUN gulp build
+
+EXPOSE 3000
+
+CMD gulp