Multi-stage build and signal handling (#55)

* Update image to use multi-stage build to not ship dev dependencies

* Handle SIGINT and SIGTERM to allow app to stop cleanly

Author: mikesir87

Dockerfile

@@ -1,11 +1,17 @@
-FROM node:6
-
-COPY . /src
+FROM node:6 as build
 WORKDIR /src
-
+COPY package* ./
 RUN npm install
+COPY . .
 RUN make build
-RUN npm prune --production
+
+FROM node:6
+WORKDIR /src
+COPY package* ./
+RUN npm install --production
+COPY --from=build /src/bin ./bin
+COPY --from=build /src/build ./build
+COPY --from=build /src/server ./server
 
 VOLUME /src
 

bin/server

@@ -11,3 +11,11 @@ let app = require('..');
 let port = process.env.PORT || 3000;
 
 app.listen(port);
+
+process.on('SIGINT', function () {
+  process.exit();
+});
+
+process.on('SIGTERM', function() {
+  process.exit();
+})