feat: add Dockerfile to this project (#173)

Inspired by https://github.com/cheminfo/rest-on-couch-docker
Then we can archive that repo and don't need another step to publish the Docker image.

.dockerignore

@@ -0,0 +1,7 @@
+conf
+coverage
+docs
+node_modules
+public/bundle*
+test
+tools

Dockerfile

@@ -0,0 +1,17 @@
+FROM node:10 as builder
+
+WORKDIR /rest-on-couch-source
+COPY ./  ./
+
+RUN npm ci && npm run build && rm -rf node_modules
+
+FROM node:10
+
+ENV NODE_ENV production
+ENV REST_ON_COUCH_HOME_DIR /rest-on-couch
+
+WORKDIR /rest-on-couch-source
+COPY --from=builder /rest-on-couch-source /rest-on-couch-source
+RUN npm install -g pm2 && npm ci && rm -rf /root/.npm
+
+CMD ["node", "bin/rest-on-couch-server.js"]