Update software

Dockerfile

-FROM node:alpine as builder
+FROM node:8-alpine as builder
 RUN apk add --update git python alpine-sdk && \
     git clone https://github.com/magne4000/quassel-webserver.git /quassel-webserver && \
     cd /quassel-webserver && \
@@ -9,8 +9,9 @@ FROM node:alpine
 RUN apk --no-cache add ca-certificates
 COPY --from=builder /quassel-webserver /quassel-webserver
 
-ADD docker-entrypoint.sh /
+ENV NODE_ENV=production
+WORKDIR /quassel-webserver
 
 EXPOSE 64080
 
-ENTRYPOINT ["/docker-entrypoint.sh"]
+ENTRYPOINT ["node", "app.js", "-m", "http"]

docker-entrypoint.sh

-#!/bin/sh
-export NODE_ENV=production
-cd /quassel-webserver
-node app.js -m http